; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s --check-prefix=X64 ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -x86-slh-lfence | FileCheck %s --check-prefix=X64-LFENCE ; ; FIXME: Add support for 32-bit and other EH ABIs. declare void @leak(i32 %v1, i32 %v2) declare void @sink(i32) define i32 @test_trivial_entry_load(ptr %ptr) speculative_load_hardening { ; X64-LABEL: test_trivial_entry_load: ; X64: # %bb.0: # %entry ; X64-NEXT: movq %rsp, %rcx ; X64-NEXT: movq $-1, %rax ; X64-NEXT: sarq $63, %rcx ; X64-NEXT: movl (%rdi), %eax ; X64-NEXT: orl %ecx, %eax ; X64-NEXT: shlq $47, %rcx ; X64-NEXT: orq %rcx, %rsp ; X64-NEXT: retq ; ; X64-LFENCE-LABEL: test_trivial_entry_load: ; X64-LFENCE: # %bb.0: # %entry ; X64-LFENCE-NEXT: movl (%rdi), %eax ; X64-LFENCE-NEXT: retq entry: %v = load i32, ptr %ptr ret i32 %v } define void @test_basic_conditions(i32 %a, i32 %b, i32 %c, ptr %ptr1, ptr %ptr2, ptr %ptr3) speculative_load_hardening { ; X64-LABEL: test_basic_conditions: ; X64: # %bb.0: # %entry ; X64-NEXT: pushq %r15 ; X64-NEXT: .cfi_def_cfa_offset 16 ; X64-NEXT: pushq %r14 ; X64-NEXT: .cfi_def_cfa_offset 24 ; X64-NEXT: pushq %rbx ; X64-NEXT: .cfi_def_cfa_offset 32 ; X64-NEXT: .cfi_offset %rbx, -32 ; X64-NEXT: .cfi_offset %r14, -24 ; X64-NEXT: .cfi_offset %r15, -16 ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq $-1, %rbx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: testl %edi, %edi ; X64-NEXT: jne .LBB1_1 ; X64-NEXT: # %bb.2: # %then1 ; X64-NEXT: cmovneq %rbx, %rax ; X64-NEXT: testl %esi, %esi ; X64-NEXT: je .LBB1_4 ; X64-NEXT: .LBB1_1: ; X64-NEXT: cmoveq %rbx, %rax ; X64-NEXT: .LBB1_8: # %exit ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: popq %rbx ; X64-NEXT: .cfi_def_cfa_offset 24 ; X64-NEXT: popq %r14 ; X64-NEXT: .cfi_def_cfa_offset 16 ; X64-NEXT: popq %r15 ; X64-NEXT: .cfi_def_cfa_offset 8 ; X64-NEXT: retq ; X64-NEXT: .LBB1_4: # %then2 ; X64-NEXT: .cfi_def_cfa_offset 32 ; X64-NEXT: movq %r8, %r14 ; X64-NEXT: cmovneq %rbx, %rax ; X64-NEXT: testl %edx, %edx ; X64-NEXT: je .LBB1_6 ; X64-NEXT: # %bb.5: # %else3 ; X64-NEXT: cmoveq %rbx, %rax ; X64-NEXT: movslq (%r9), %rcx ; X64-NEXT: orq %rax, %rcx ; X64-NEXT: leaq (%r14,%rcx,4), %r15 ; X64-NEXT: movl %ecx, (%r14,%rcx,4) ; X64-NEXT: jmp .LBB1_7 ; X64-NEXT: .LBB1_6: # %then3 ; X64-NEXT: cmovneq %rbx, %rax ; X64-NEXT: movl (%rcx), %ecx ; X64-NEXT: addl (%r14), %ecx ; X64-NEXT: movslq %ecx, %rdi ; X64-NEXT: orq %rax, %rdi ; X64-NEXT: movl (%r14,%rdi,4), %esi ; X64-NEXT: orl %eax, %esi ; X64-NEXT: movq (%r9), %r15 ; X64-NEXT: orq %rax, %r15 ; X64-NEXT: addl (%r15), %esi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: # kill: def $edi killed $edi killed $rdi ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq leak@PLT ; X64-NEXT: .Lslh_ret_addr0: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr0, %rcx ; X64-NEXT: cmovneq %rbx, %rax ; X64-NEXT: .LBB1_7: # %merge ; X64-NEXT: movslq (%r15), %rcx ; X64-NEXT: orq %rax, %rcx ; X64-NEXT: movl $0, (%r14,%rcx,4) ; X64-NEXT: jmp .LBB1_8 ; ; X64-LFENCE-LABEL: test_basic_conditions: ; X64-LFENCE: # %bb.0: # %entry ; X64-LFENCE-NEXT: pushq %r14 ; X64-LFENCE-NEXT: .cfi_def_cfa_offset 16 ; X64-LFENCE-NEXT: pushq %rbx ; X64-LFENCE-NEXT: .cfi_def_cfa_offset 24 ; X64-LFENCE-NEXT: pushq %rax ; X64-LFENCE-NEXT: .cfi_def_cfa_offset 32 ; X64-LFENCE-NEXT: .cfi_offset %rbx, -24 ; X64-LFENCE-NEXT: .cfi_offset %r14, -16 ; X64-LFENCE-NEXT: testl %edi, %edi ; X64-LFENCE-NEXT: jne .LBB1_6 ; X64-LFENCE-NEXT: # %bb.1: # %then1 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: testl %esi, %esi ; X64-LFENCE-NEXT: jne .LBB1_6 ; X64-LFENCE-NEXT: # %bb.2: # %then2 ; X64-LFENCE-NEXT: movq %r8, %rbx ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: testl %edx, %edx ; X64-LFENCE-NEXT: je .LBB1_3 ; X64-LFENCE-NEXT: # %bb.4: # %else3 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: movslq (%r9), %rax ; X64-LFENCE-NEXT: leaq (%rbx,%rax,4), %r14 ; X64-LFENCE-NEXT: movl %eax, (%rbx,%rax,4) ; X64-LFENCE-NEXT: jmp .LBB1_5 ; X64-LFENCE-NEXT: .LBB1_3: # %then3 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: movl (%rcx), %eax ; X64-LFENCE-NEXT: addl (%rbx), %eax ; X64-LFENCE-NEXT: movslq %eax, %rdi ; X64-LFENCE-NEXT: movl (%rbx,%rdi,4), %esi ; X64-LFENCE-NEXT: movq (%r9), %r14 ; X64-LFENCE-NEXT: addl (%r14), %esi ; X64-LFENCE-NEXT: # kill: def $edi killed $edi killed $rdi ; X64-LFENCE-NEXT: callq leak@PLT ; X64-LFENCE-NEXT: .LBB1_5: # %merge ; X64-LFENCE-NEXT: movslq (%r14), %rax ; X64-LFENCE-NEXT: movl $0, (%rbx,%rax,4) ; X64-LFENCE-NEXT: .LBB1_6: # %exit ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: addq $8, %rsp ; X64-LFENCE-NEXT: .cfi_def_cfa_offset 24 ; X64-LFENCE-NEXT: popq %rbx ; X64-LFENCE-NEXT: .cfi_def_cfa_offset 16 ; X64-LFENCE-NEXT: popq %r14 ; X64-LFENCE-NEXT: .cfi_def_cfa_offset 8 ; X64-LFENCE-NEXT: retq entry: %a.cmp = icmp eq i32 %a, 0 br i1 %a.cmp, label %then1, label %exit then1: %b.cmp = icmp eq i32 %b, 0 br i1 %b.cmp, label %then2, label %exit then2: %c.cmp = icmp eq i32 %c, 0 br i1 %c.cmp, label %then3, label %else3 then3: %secret1 = load i32, ptr %ptr1 %secret2 = load i32, ptr %ptr2 %secret.sum1 = add i32 %secret1, %secret2 %ptr2.idx = getelementptr i32, ptr %ptr2, i32 %secret.sum1 %secret3 = load i32, ptr %ptr2.idx %secret4 = load ptr, ptr %ptr3 %secret5 = load i32, ptr %secret4 %secret.sum2 = add i32 %secret3, %secret5 call void @leak(i32 %secret.sum1, i32 %secret.sum2) br label %merge else3: %secret6 = load ptr, ptr %ptr3 %cast = ptrtoint ptr %secret6 to i32 %ptr2.idx2 = getelementptr i32, ptr %ptr2, i32 %cast store i32 %cast, ptr %ptr2.idx2 br label %merge merge: %phi = phi ptr [ %secret4, %then3 ], [ %ptr2.idx2, %else3 ] %secret7 = load i32, ptr %phi %ptr2.idx3 = getelementptr i32, ptr %ptr2, i32 %secret7 store i32 0, ptr %ptr2.idx3 br label %exit exit: ret void } define void @test_basic_loop(i32 %a, i32 %b, ptr %ptr1, ptr %ptr2) nounwind speculative_load_hardening { ; X64-LABEL: test_basic_loop: ; X64: # %bb.0: # %entry ; X64-NEXT: pushq %rbp ; X64-NEXT: pushq %r15 ; X64-NEXT: pushq %r14 ; X64-NEXT: pushq %r12 ; X64-NEXT: pushq %rbx ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq $-1, %r15 ; X64-NEXT: sarq $63, %rax ; X64-NEXT: testl %edi, %edi ; X64-NEXT: je .LBB2_2 ; X64-NEXT: # %bb.1: ; X64-NEXT: cmoveq %r15, %rax ; X64-NEXT: jmp .LBB2_5 ; X64-NEXT: .LBB2_2: # %l.header.preheader ; X64-NEXT: movq %rcx, %r14 ; X64-NEXT: movq %rdx, %r12 ; X64-NEXT: movl %esi, %ebp ; X64-NEXT: cmovneq %r15, %rax ; X64-NEXT: xorl %ebx, %ebx ; X64-NEXT: .p2align 4, 0x90 ; X64-NEXT: .LBB2_3: # %l.header ; X64-NEXT: # =>This Inner Loop Header: Depth=1 ; X64-NEXT: movslq (%r12), %rcx ; X64-NEXT: orq %rax, %rcx ; X64-NEXT: movq %rax, %rdx ; X64-NEXT: orq %r14, %rdx ; X64-NEXT: movl (%rdx,%rcx,4), %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr1: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr1, %rcx ; X64-NEXT: cmovneq %r15, %rax ; X64-NEXT: incl %ebx ; X64-NEXT: cmpl %ebp, %ebx ; X64-NEXT: jge .LBB2_4 ; X64-NEXT: # %bb.6: # in Loop: Header=BB2_3 Depth=1 ; X64-NEXT: cmovgeq %r15, %rax ; X64-NEXT: jmp .LBB2_3 ; X64-NEXT: .LBB2_4: ; X64-NEXT: cmovlq %r15, %rax ; X64-NEXT: .LBB2_5: # %exit ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: popq %rbx ; X64-NEXT: popq %r12 ; X64-NEXT: popq %r14 ; X64-NEXT: popq %r15 ; X64-NEXT: popq %rbp ; X64-NEXT: retq ; ; X64-LFENCE-LABEL: test_basic_loop: ; X64-LFENCE: # %bb.0: # %entry ; X64-LFENCE-NEXT: pushq %rbp ; X64-LFENCE-NEXT: pushq %r15 ; X64-LFENCE-NEXT: pushq %r14 ; X64-LFENCE-NEXT: pushq %rbx ; X64-LFENCE-NEXT: pushq %rax ; X64-LFENCE-NEXT: testl %edi, %edi ; X64-LFENCE-NEXT: jne .LBB2_3 ; X64-LFENCE-NEXT: # %bb.1: # %l.header.preheader ; X64-LFENCE-NEXT: movq %rcx, %r14 ; X64-LFENCE-NEXT: movq %rdx, %r15 ; X64-LFENCE-NEXT: movl %esi, %ebp ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: xorl %ebx, %ebx ; X64-LFENCE-NEXT: .p2align 4, 0x90 ; X64-LFENCE-NEXT: .LBB2_2: # %l.header ; X64-LFENCE-NEXT: # =>This Inner Loop Header: Depth=1 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: movslq (%r15), %rax ; X64-LFENCE-NEXT: movl (%r14,%rax,4), %edi ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: incl %ebx ; X64-LFENCE-NEXT: cmpl %ebp, %ebx ; X64-LFENCE-NEXT: jl .LBB2_2 ; X64-LFENCE-NEXT: .LBB2_3: # %exit ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: addq $8, %rsp ; X64-LFENCE-NEXT: popq %rbx ; X64-LFENCE-NEXT: popq %r14 ; X64-LFENCE-NEXT: popq %r15 ; X64-LFENCE-NEXT: popq %rbp ; X64-LFENCE-NEXT: retq entry: %a.cmp = icmp eq i32 %a, 0 br i1 %a.cmp, label %l.header, label %exit l.header: %i = phi i32 [ 0, %entry ], [ %i.next, %l.header ] %secret = load i32, ptr %ptr1 %ptr2.idx = getelementptr i32, ptr %ptr2, i32 %secret %leak = load i32, ptr %ptr2.idx call void @sink(i32 %leak) %i.next = add i32 %i, 1 %i.cmp = icmp slt i32 %i.next, %b br i1 %i.cmp, label %l.header, label %exit exit: ret void } define void @test_basic_nested_loop(i32 %a, i32 %b, i32 %c, ptr %ptr1, ptr %ptr2) nounwind speculative_load_hardening { ; X64-LABEL: test_basic_nested_loop: ; X64: # %bb.0: # %entry ; X64-NEXT: pushq %rbp ; X64-NEXT: pushq %r15 ; X64-NEXT: pushq %r14 ; X64-NEXT: pushq %r13 ; X64-NEXT: pushq %r12 ; X64-NEXT: pushq %rbx ; X64-NEXT: pushq %rax ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq $-1, %rbp ; X64-NEXT: sarq $63, %rax ; X64-NEXT: testl %edi, %edi ; X64-NEXT: je .LBB3_2 ; X64-NEXT: # %bb.1: ; X64-NEXT: cmoveq %rbp, %rax ; X64-NEXT: jmp .LBB3_10 ; X64-NEXT: .LBB3_2: # %l1.header.preheader ; X64-NEXT: movq %r8, %r14 ; X64-NEXT: movq %rcx, %rbx ; X64-NEXT: movl %edx, %r12d ; X64-NEXT: movl %esi, %r15d ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: xorl %r13d, %r13d ; X64-NEXT: movl %esi, {{[-0-9]+}}(%r{{[sb]}}p) # 4-byte Spill ; X64-NEXT: testl %r15d, %r15d ; X64-NEXT: jle .LBB3_4 ; X64-NEXT: .p2align 4, 0x90 ; X64-NEXT: .LBB3_5: # %l2.header.preheader ; X64-NEXT: cmovleq %rbp, %rax ; X64-NEXT: xorl %r15d, %r15d ; X64-NEXT: .p2align 4, 0x90 ; X64-NEXT: .LBB3_6: # %l2.header ; X64-NEXT: # =>This Inner Loop Header: Depth=1 ; X64-NEXT: movslq (%rbx), %rcx ; X64-NEXT: orq %rax, %rcx ; X64-NEXT: movq %rax, %rdx ; X64-NEXT: orq %r14, %rdx ; X64-NEXT: movl (%rdx,%rcx,4), %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr2: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr2, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: incl %r15d ; X64-NEXT: cmpl %r12d, %r15d ; X64-NEXT: jge .LBB3_7 ; X64-NEXT: # %bb.11: # in Loop: Header=BB3_6 Depth=1 ; X64-NEXT: cmovgeq %rbp, %rax ; X64-NEXT: jmp .LBB3_6 ; X64-NEXT: .p2align 4, 0x90 ; X64-NEXT: .LBB3_7: ; X64-NEXT: cmovlq %rbp, %rax ; X64-NEXT: movl {{[-0-9]+}}(%r{{[sb]}}p), %r15d # 4-byte Reload ; X64-NEXT: jmp .LBB3_8 ; X64-NEXT: .p2align 4, 0x90 ; X64-NEXT: .LBB3_4: ; X64-NEXT: cmovgq %rbp, %rax ; X64-NEXT: .LBB3_8: # %l1.latch ; X64-NEXT: movslq (%rbx), %rcx ; X64-NEXT: orq %rax, %rcx ; X64-NEXT: movq %rax, %rdx ; X64-NEXT: orq %r14, %rdx ; X64-NEXT: movl (%rdx,%rcx,4), %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr3: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr3, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: incl %r13d ; X64-NEXT: cmpl %r15d, %r13d ; X64-NEXT: jge .LBB3_9 ; X64-NEXT: # %bb.12: ; X64-NEXT: cmovgeq %rbp, %rax ; X64-NEXT: testl %r15d, %r15d ; X64-NEXT: jg .LBB3_5 ; X64-NEXT: jmp .LBB3_4 ; X64-NEXT: .LBB3_9: ; X64-NEXT: cmovlq %rbp, %rax ; X64-NEXT: .LBB3_10: # %exit ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: addq $8, %rsp ; X64-NEXT: popq %rbx ; X64-NEXT: popq %r12 ; X64-NEXT: popq %r13 ; X64-NEXT: popq %r14 ; X64-NEXT: popq %r15 ; X64-NEXT: popq %rbp ; X64-NEXT: retq ; ; X64-LFENCE-LABEL: test_basic_nested_loop: ; X64-LFENCE: # %bb.0: # %entry ; X64-LFENCE-NEXT: pushq %rbp ; X64-LFENCE-NEXT: pushq %r15 ; X64-LFENCE-NEXT: pushq %r14 ; X64-LFENCE-NEXT: pushq %r13 ; X64-LFENCE-NEXT: pushq %r12 ; X64-LFENCE-NEXT: pushq %rbx ; X64-LFENCE-NEXT: pushq %rax ; X64-LFENCE-NEXT: testl %edi, %edi ; X64-LFENCE-NEXT: je .LBB3_1 ; X64-LFENCE-NEXT: .LBB3_6: # %exit ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: addq $8, %rsp ; X64-LFENCE-NEXT: popq %rbx ; X64-LFENCE-NEXT: popq %r12 ; X64-LFENCE-NEXT: popq %r13 ; X64-LFENCE-NEXT: popq %r14 ; X64-LFENCE-NEXT: popq %r15 ; X64-LFENCE-NEXT: popq %rbp ; X64-LFENCE-NEXT: retq ; X64-LFENCE-NEXT: .LBB3_1: # %l1.header.preheader ; X64-LFENCE-NEXT: movq %r8, %r14 ; X64-LFENCE-NEXT: movq %rcx, %rbx ; X64-LFENCE-NEXT: movl %edx, %r13d ; X64-LFENCE-NEXT: movl %esi, %r15d ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: xorl %r12d, %r12d ; X64-LFENCE-NEXT: jmp .LBB3_2 ; X64-LFENCE-NEXT: .p2align 4, 0x90 ; X64-LFENCE-NEXT: .LBB3_5: # %l1.latch ; X64-LFENCE-NEXT: # in Loop: Header=BB3_2 Depth=1 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: movslq (%rbx), %rax ; X64-LFENCE-NEXT: movl (%r14,%rax,4), %edi ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: incl %r12d ; X64-LFENCE-NEXT: cmpl %r15d, %r12d ; X64-LFENCE-NEXT: jge .LBB3_6 ; X64-LFENCE-NEXT: .LBB3_2: # %l1.header ; X64-LFENCE-NEXT: # =>This Loop Header: Depth=1 ; X64-LFENCE-NEXT: # Child Loop BB3_4 Depth 2 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: testl %r15d, %r15d ; X64-LFENCE-NEXT: jle .LBB3_5 ; X64-LFENCE-NEXT: # %bb.3: # %l2.header.preheader ; X64-LFENCE-NEXT: # in Loop: Header=BB3_2 Depth=1 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: xorl %ebp, %ebp ; X64-LFENCE-NEXT: .p2align 4, 0x90 ; X64-LFENCE-NEXT: .LBB3_4: # %l2.header ; X64-LFENCE-NEXT: # Parent Loop BB3_2 Depth=1 ; X64-LFENCE-NEXT: # => This Inner Loop Header: Depth=2 ; X64-LFENCE-NEXT: lfence ; X64-LFENCE-NEXT: movslq (%rbx), %rax ; X64-LFENCE-NEXT: movl (%r14,%rax,4), %edi ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: incl %ebp ; X64-LFENCE-NEXT: cmpl %r13d, %ebp ; X64-LFENCE-NEXT: jl .LBB3_4 ; X64-LFENCE-NEXT: jmp .LBB3_5 entry: %a.cmp = icmp eq i32 %a, 0 br i1 %a.cmp, label %l1.header, label %exit l1.header: %i = phi i32 [ 0, %entry ], [ %i.next, %l1.latch ] %b.cmp = icmp sgt i32 %b, 0 br i1 %b.cmp, label %l2.header, label %l1.latch l2.header: %j = phi i32 [ 0, %l1.header ], [ %j.next, %l2.header ] %secret = load i32, ptr %ptr1 %ptr2.idx = getelementptr i32, ptr %ptr2, i32 %secret %leak = load i32, ptr %ptr2.idx call void @sink(i32 %leak) %j.next = add i32 %j, 1 %j.cmp = icmp slt i32 %j.next, %c br i1 %j.cmp, label %l2.header, label %l1.latch l1.latch: %secret2 = load i32, ptr %ptr1 %ptr2.idx2 = getelementptr i32, ptr %ptr2, i32 %secret2 %leak2 = load i32, ptr %ptr2.idx2 call void @sink(i32 %leak2) %i.next = add i32 %i, 1 %i.cmp = icmp slt i32 %i.next, %b br i1 %i.cmp, label %l1.header, label %exit exit: ret void } declare i32 @__gxx_personality_v0(...) declare ptr @__cxa_allocate_exception(i64) local_unnamed_addr declare void @__cxa_throw(ptr, ptr, ptr) local_unnamed_addr define void @test_basic_eh(i32 %a, ptr %ptr1, ptr %ptr2) speculative_load_hardening personality ptr @__gxx_personality_v0 { entry: %a.cmp = icmp slt i32 %a, 42 br i1 %a.cmp, label %thrower, label %exit thrower: %badidx = getelementptr i32, ptr %ptr1, i32 %a %secret1 = load i32, ptr %badidx %e.ptr = call ptr @__cxa_allocate_exception(i64 4) store i32 %secret1, ptr %e.ptr invoke void @__cxa_throw(ptr %e.ptr, ptr null, ptr null) to label %exit unwind label %lpad exit: ret void lpad: %e = landingpad { ptr, i32 } catch ptr null %e.catch.ptr = extractvalue { ptr, i32 } %e, 0 %secret1.catch = load i32, ptr %e.catch.ptr %secret2 = load i32, ptr %ptr1 %secret.sum = add i32 %secret1.catch, %secret2 %ptr2.idx = getelementptr i32, ptr %ptr2, i32 %secret.sum %leak = load i32, ptr %ptr2.idx call void @sink(i32 %leak) unreachable } declare void @sink_float(float) declare void @sink_double(double) ; Test direct and converting loads of floating point values. define void @test_fp_loads(ptr %fptr, ptr %dptr, ptr %i32ptr, ptr %i64ptr) nounwind speculative_load_hardening { ; X64-LABEL: test_fp_loads: ; X64: # %bb.0: # %entry ; X64-NEXT: pushq %r15 ; X64-NEXT: pushq %r14 ; X64-NEXT: pushq %r13 ; X64-NEXT: pushq %r12 ; X64-NEXT: pushq %rbx ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq %rcx, %r15 ; X64-NEXT: movq %rdx, %r14 ; X64-NEXT: movq %rsi, %rbx ; X64-NEXT: movq %rdi, %r12 ; X64-NEXT: movq $-1, %r13 ; X64-NEXT: sarq $63, %rax ; X64-NEXT: orq %rax, %r12 ; X64-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_float@PLT ; X64-NEXT: .Lslh_ret_addr7: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr7, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: orq %rax, %rbx ; X64-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_double@PLT ; X64-NEXT: .Lslh_ret_addr8: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr8, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero ; X64-NEXT: cvtsd2ss %xmm0, %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_float@PLT ; X64-NEXT: .Lslh_ret_addr9: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr9, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero ; X64-NEXT: cvtss2sd %xmm0, %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_double@PLT ; X64-NEXT: .Lslh_ret_addr10: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr10, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: orq %rax, %r14 ; X64-NEXT: xorps %xmm0, %xmm0 ; X64-NEXT: cvtsi2ssl (%r14), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_float@PLT ; X64-NEXT: .Lslh_ret_addr11: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr11, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: orq %rax, %r15 ; X64-NEXT: xorps %xmm0, %xmm0 ; X64-NEXT: cvtsi2sdq (%r15), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_double@PLT ; X64-NEXT: .Lslh_ret_addr12: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr12, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: xorps %xmm0, %xmm0 ; X64-NEXT: cvtsi2ssq (%r15), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_float@PLT ; X64-NEXT: .Lslh_ret_addr13: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr13, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: xorps %xmm0, %xmm0 ; X64-NEXT: cvtsi2sdl (%r14), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_double@PLT ; X64-NEXT: .Lslh_ret_addr14: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr14, %rcx ; X64-NEXT: cmovneq %r13, %rax ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: popq %rbx ; X64-NEXT: popq %r12 ; X64-NEXT: popq %r13 ; X64-NEXT: popq %r14 ; X64-NEXT: popq %r15 ; X64-NEXT: retq ; ; X64-LFENCE-LABEL: test_fp_loads: ; X64-LFENCE: # %bb.0: # %entry ; X64-LFENCE-NEXT: pushq %r15 ; X64-LFENCE-NEXT: pushq %r14 ; X64-LFENCE-NEXT: pushq %r12 ; X64-LFENCE-NEXT: pushq %rbx ; X64-LFENCE-NEXT: pushq %rax ; X64-LFENCE-NEXT: movq %rcx, %r15 ; X64-LFENCE-NEXT: movq %rdx, %r14 ; X64-LFENCE-NEXT: movq %rsi, %rbx ; X64-LFENCE-NEXT: movq %rdi, %r12 ; X64-LFENCE-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero ; X64-LFENCE-NEXT: callq sink_float@PLT ; X64-LFENCE-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero ; X64-LFENCE-NEXT: callq sink_double@PLT ; X64-LFENCE-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero ; X64-LFENCE-NEXT: cvtsd2ss %xmm0, %xmm0 ; X64-LFENCE-NEXT: callq sink_float@PLT ; X64-LFENCE-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero ; X64-LFENCE-NEXT: cvtss2sd %xmm0, %xmm0 ; X64-LFENCE-NEXT: callq sink_double@PLT ; X64-LFENCE-NEXT: xorps %xmm0, %xmm0 ; X64-LFENCE-NEXT: cvtsi2ssl (%r14), %xmm0 ; X64-LFENCE-NEXT: callq sink_float@PLT ; X64-LFENCE-NEXT: xorps %xmm0, %xmm0 ; X64-LFENCE-NEXT: cvtsi2sdq (%r15), %xmm0 ; X64-LFENCE-NEXT: callq sink_double@PLT ; X64-LFENCE-NEXT: xorps %xmm0, %xmm0 ; X64-LFENCE-NEXT: cvtsi2ssq (%r15), %xmm0 ; X64-LFENCE-NEXT: callq sink_float@PLT ; X64-LFENCE-NEXT: xorps %xmm0, %xmm0 ; X64-LFENCE-NEXT: cvtsi2sdl (%r14), %xmm0 ; X64-LFENCE-NEXT: callq sink_double@PLT ; X64-LFENCE-NEXT: addq $8, %rsp ; X64-LFENCE-NEXT: popq %rbx ; X64-LFENCE-NEXT: popq %r12 ; X64-LFENCE-NEXT: popq %r14 ; X64-LFENCE-NEXT: popq %r15 ; X64-LFENCE-NEXT: retq entry: %f1 = load float, ptr %fptr call void @sink_float(float %f1) %d1 = load double, ptr %dptr call void @sink_double(double %d1) %f2.d = load double, ptr %dptr %f2 = fptrunc double %f2.d to float call void @sink_float(float %f2) %d2.f = load float, ptr %fptr %d2 = fpext float %d2.f to double call void @sink_double(double %d2) %f3.i = load i32, ptr %i32ptr %f3 = sitofp i32 %f3.i to float call void @sink_float(float %f3) %d3.i = load i64, ptr %i64ptr %d3 = sitofp i64 %d3.i to double call void @sink_double(double %d3) %f4.i = load i64, ptr %i64ptr %f4 = sitofp i64 %f4.i to float call void @sink_float(float %f4) %d4.i = load i32, ptr %i32ptr %d4 = sitofp i32 %d4.i to double call void @sink_double(double %d4) ret void } declare void @sink_v4f32(<4 x float>) declare void @sink_v2f64(<2 x double>) declare void @sink_v16i8(<16 x i8>) declare void @sink_v8i16(<8 x i16>) declare void @sink_v4i32(<4 x i32>) declare void @sink_v2i64(<2 x i64>) ; Test loads of vectors. define void @test_vec_loads(ptr %v4f32ptr, ptr %v2f64ptr, ptr %v16i8ptr, ptr %v8i16ptr, ptr %v4i32ptr, ptr %v2i64ptr) nounwind speculative_load_hardening { ; X64-LABEL: test_vec_loads: ; X64: # %bb.0: # %entry ; X64-NEXT: pushq %rbp ; X64-NEXT: pushq %r15 ; X64-NEXT: pushq %r14 ; X64-NEXT: pushq %r13 ; X64-NEXT: pushq %r12 ; X64-NEXT: pushq %rbx ; X64-NEXT: pushq %rax ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq %r9, %r14 ; X64-NEXT: movq %r8, %r15 ; X64-NEXT: movq %rcx, %r12 ; X64-NEXT: movq %rdx, %r13 ; X64-NEXT: movq %rsi, %rbx ; X64-NEXT: movq $-1, %rbp ; X64-NEXT: sarq $63, %rax ; X64-NEXT: orq %rax, %rdi ; X64-NEXT: movaps (%rdi), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_v4f32@PLT ; X64-NEXT: .Lslh_ret_addr15: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr15, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: orq %rax, %rbx ; X64-NEXT: movaps (%rbx), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_v2f64@PLT ; X64-NEXT: .Lslh_ret_addr16: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr16, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: orq %rax, %r13 ; X64-NEXT: movaps (%r13), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_v16i8@PLT ; X64-NEXT: .Lslh_ret_addr17: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr17, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: orq %rax, %r12 ; X64-NEXT: movaps (%r12), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_v8i16@PLT ; X64-NEXT: .Lslh_ret_addr18: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr18, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: orq %rax, %r15 ; X64-NEXT: movaps (%r15), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_v4i32@PLT ; X64-NEXT: .Lslh_ret_addr19: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr19, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: orq %rax, %r14 ; X64-NEXT: movaps (%r14), %xmm0 ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink_v2i64@PLT ; X64-NEXT: .Lslh_ret_addr20: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr20, %rcx ; X64-NEXT: cmovneq %rbp, %rax ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: addq $8, %rsp ; X64-NEXT: popq %rbx ; X64-NEXT: popq %r12 ; X64-NEXT: popq %r13 ; X64-NEXT: popq %r14 ; X64-NEXT: popq %r15 ; X64-NEXT: popq %rbp ; X64-NEXT: retq ; ; X64-LFENCE-LABEL: test_vec_loads: ; X64-LFENCE: # %bb.0: # %entry ; X64-LFENCE-NEXT: pushq %r15 ; X64-LFENCE-NEXT: pushq %r14 ; X64-LFENCE-NEXT: pushq %r13 ; X64-LFENCE-NEXT: pushq %r12 ; X64-LFENCE-NEXT: pushq %rbx ; X64-LFENCE-NEXT: movq %r9, %r14 ; X64-LFENCE-NEXT: movq %r8, %r15 ; X64-LFENCE-NEXT: movq %rcx, %r12 ; X64-LFENCE-NEXT: movq %rdx, %r13 ; X64-LFENCE-NEXT: movq %rsi, %rbx ; X64-LFENCE-NEXT: movaps (%rdi), %xmm0 ; X64-LFENCE-NEXT: callq sink_v4f32@PLT ; X64-LFENCE-NEXT: movaps (%rbx), %xmm0 ; X64-LFENCE-NEXT: callq sink_v2f64@PLT ; X64-LFENCE-NEXT: movaps (%r13), %xmm0 ; X64-LFENCE-NEXT: callq sink_v16i8@PLT ; X64-LFENCE-NEXT: movaps (%r12), %xmm0 ; X64-LFENCE-NEXT: callq sink_v8i16@PLT ; X64-LFENCE-NEXT: movaps (%r15), %xmm0 ; X64-LFENCE-NEXT: callq sink_v4i32@PLT ; X64-LFENCE-NEXT: movaps (%r14), %xmm0 ; X64-LFENCE-NEXT: callq sink_v2i64@PLT ; X64-LFENCE-NEXT: popq %rbx ; X64-LFENCE-NEXT: popq %r12 ; X64-LFENCE-NEXT: popq %r13 ; X64-LFENCE-NEXT: popq %r14 ; X64-LFENCE-NEXT: popq %r15 ; X64-LFENCE-NEXT: retq entry: %x1 = load <4 x float>, ptr %v4f32ptr call void @sink_v4f32(<4 x float> %x1) %x2 = load <2 x double>, ptr %v2f64ptr call void @sink_v2f64(<2 x double> %x2) %x3 = load <16 x i8>, ptr %v16i8ptr call void @sink_v16i8(<16 x i8> %x3) %x4 = load <8 x i16>, ptr %v8i16ptr call void @sink_v8i16(<8 x i16> %x4) %x5 = load <4 x i32>, ptr %v4i32ptr call void @sink_v4i32(<4 x i32> %x5) %x6 = load <2 x i64>, ptr %v2i64ptr call void @sink_v2i64(<2 x i64> %x6) ret void } define void @test_deferred_hardening(ptr %ptr1, ptr %ptr2, i32 %x) nounwind speculative_load_hardening { ; X64-LABEL: test_deferred_hardening: ; X64: # %bb.0: # %entry ; X64-NEXT: pushq %r15 ; X64-NEXT: pushq %r14 ; X64-NEXT: pushq %rbx ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq %rsi, %r14 ; X64-NEXT: movq %rdi, %rbx ; X64-NEXT: movq $-1, %r15 ; X64-NEXT: sarq $63, %rax ; X64-NEXT: movl (%rdi), %edi ; X64-NEXT: incl %edi ; X64-NEXT: imull %edx, %edi ; X64-NEXT: orl %eax, %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr21: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr21, %rcx ; X64-NEXT: cmovneq %r15, %rax ; X64-NEXT: movl (%rbx), %ecx ; X64-NEXT: movl (%r14), %edx ; X64-NEXT: leal 1(%rcx,%rdx), %edi ; X64-NEXT: orl %eax, %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr22: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr22, %rcx ; X64-NEXT: cmovneq %r15, %rax ; X64-NEXT: movl (%rbx), %edi ; X64-NEXT: shll $7, %edi ; X64-NEXT: orl %eax, %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr23: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr23, %rcx ; X64-NEXT: cmovneq %r15, %rax ; X64-NEXT: movswl (%rbx), %edi ; X64-NEXT: notl %edi ; X64-NEXT: shrl $7, %edi ; X64-NEXT: orl $-65536, %edi # imm = 0xFFFF0000 ; X64-NEXT: orl %eax, %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr24: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr24, %rcx ; X64-NEXT: cmovneq %r15, %rax ; X64-NEXT: movzwl (%rbx), %ecx ; X64-NEXT: rolw $9, %cx ; X64-NEXT: movswl %cx, %edi ; X64-NEXT: negl %edi ; X64-NEXT: orl %eax, %edi ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: callq sink@PLT ; X64-NEXT: .Lslh_ret_addr25: ; X64-NEXT: movq %rsp, %rax ; X64-NEXT: movq -{{[0-9]+}}(%rsp), %rcx ; X64-NEXT: sarq $63, %rax ; X64-NEXT: cmpq $.Lslh_ret_addr25, %rcx ; X64-NEXT: cmovneq %r15, %rax ; X64-NEXT: shlq $47, %rax ; X64-NEXT: orq %rax, %rsp ; X64-NEXT: popq %rbx ; X64-NEXT: popq %r14 ; X64-NEXT: popq %r15 ; X64-NEXT: retq ; ; X64-LFENCE-LABEL: test_deferred_hardening: ; X64-LFENCE: # %bb.0: # %entry ; X64-LFENCE-NEXT: pushq %r14 ; X64-LFENCE-NEXT: pushq %rbx ; X64-LFENCE-NEXT: pushq %rax ; X64-LFENCE-NEXT: movq %rsi, %r14 ; X64-LFENCE-NEXT: movq %rdi, %rbx ; X64-LFENCE-NEXT: movl (%rdi), %edi ; X64-LFENCE-NEXT: incl %edi ; X64-LFENCE-NEXT: imull %edx, %edi ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: movl (%rbx), %eax ; X64-LFENCE-NEXT: movl (%r14), %ecx ; X64-LFENCE-NEXT: leal 1(%rax,%rcx), %edi ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: movl (%rbx), %edi ; X64-LFENCE-NEXT: shll $7, %edi ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: movswl (%rbx), %edi ; X64-LFENCE-NEXT: notl %edi ; X64-LFENCE-NEXT: shrl $7, %edi ; X64-LFENCE-NEXT: orl $-65536, %edi # imm = 0xFFFF0000 ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: movzwl (%rbx), %eax ; X64-LFENCE-NEXT: rolw $9, %ax ; X64-LFENCE-NEXT: movswl %ax, %edi ; X64-LFENCE-NEXT: negl %edi ; X64-LFENCE-NEXT: callq sink@PLT ; X64-LFENCE-NEXT: addq $8, %rsp ; X64-LFENCE-NEXT: popq %rbx ; X64-LFENCE-NEXT: popq %r14 ; X64-LFENCE-NEXT: retq entry: %a1 = load i32, ptr %ptr1 %a2 = add i32 %a1, 1 %a3 = mul i32 %a2, %x call void @sink(i32 %a3) %b1 = load i32, ptr %ptr1 %b2 = add i32 %b1, 1 %b3 = load i32, ptr %ptr2 %b4 = add i32 %b2, %b3 call void @sink(i32 %b4) %c1 = load i32, ptr %ptr1 %c2 = shl i32 %c1, 7 call void @sink(i32 %c2) %d1 = load i32, ptr %ptr1 ; Check trunc and integer ops narrower than i32. %d2 = trunc i32 %d1 to i16 %d3 = ashr i16 %d2, 7 %d4 = zext i16 %d3 to i32 %d5 = xor i32 %d4, -1 call void @sink(i32 %d5) %e1 = load i32, ptr %ptr1 %e2 = trunc i32 %e1 to i16 %e3 = lshr i16 %e2, 7 %e4 = shl i16 %e2, 9 %e5 = or i16 %e3, %e4 %e6 = sext i16 %e5 to i32 %e7 = sub i32 0, %e6 call void @sink(i32 %e7) ret void } ; Make sure we don't crash on idempotent atomic operations which have a ; hardcoded reference to RSP+offset. define void @idempotent_atomic(ptr %x) speculative_load_hardening { ; X64-LABEL: idempotent_atomic: ; X64: # %bb.0: ; X64-NEXT: lock orl $0, -{{[0-9]+}}(%rsp) ; X64-NEXT: retq ; ; X64-LFENCE-LABEL: idempotent_atomic: ; X64-LFENCE: # %bb.0: ; X64-LFENCE-NEXT: lock orl $0, -{{[0-9]+}}(%rsp) ; X64-LFENCE-NEXT: retq %tmp = atomicrmw or ptr %x, i32 0 seq_cst ret void }