; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx | FileCheck %s
%structTy = type { i8, i32, i32 }
@e = common dso_local global %structTy zeroinitializer, align 4
;; Ensure that MergeConsecutiveStores doesn't incorrectly reorder
;; store operations. The first test stores in increasing address
;; order, the second in decreasing -- but in both cases should have
;; the same result in memory in the end.
define dso_local void @redundant_stores_merging() {
; CHECK-LABEL: redundant_stores_merging:
; CHECK: # %bb.0:
; CHECK-NEXT: movabsq $1958505086977, %rax # imm = 0x1C800000001
; CHECK-NEXT: movq %rax, e+4(%rip)
; CHECK-NEXT: retq
store i32 1, ptr getelementptr inbounds (%structTy, ptr @e, i64 0, i32 1), align 4
store i32 123, ptr getelementptr inbounds (%structTy, ptr @e, i64 0, i32 2), align 4
store i32 456, ptr getelementptr inbounds (%structTy, ptr @e, i64 0, i32 2), align 4
ret void
}
;; This variant tests PR25154.
define dso_local void @redundant_stores_merging_reverse() {
; CHECK-LABEL: redundant_stores_merging_reverse:
; CHECK: # %bb.0:
; CHECK-NEXT: movabsq $528280977409, %rax # imm = 0x7B00000001
; CHECK-NEXT: movq %rax, e+4(%rip)
; CHECK-NEXT: movl $456, e+8(%rip) # imm = 0x1C8
; CHECK-NEXT: retq
store i32 123, ptr getelementptr inbounds (%structTy, ptr @e, i64 0, i32 2), align 4
store i32 456, ptr getelementptr inbounds (%structTy, ptr @e, i64 0, i32 2), align 4
store i32 1, ptr getelementptr inbounds (%structTy, ptr @e, i64 0, i32 1), align 4
ret void
}
@b = common dso_local global [8 x i8] zeroinitializer, align 2
;; The 2-byte store to offset 3 overlaps the 2-byte store to offset 2;
;; these must not be reordered in MergeConsecutiveStores such that the
;; store to 3 comes first (e.g. by merging the stores to 0 and 2 into
;; a movl, after the store to 3).
define dso_local void @overlapping_stores_merging() {
; CHECK-LABEL: overlapping_stores_merging:
; CHECK: # %bb.0:
; CHECK-NEXT: movl $1, b(%rip)
; CHECK-NEXT: movw $2, b+3(%rip)
; CHECK-NEXT: retq
store i16 0, ptr getelementptr inbounds ([8 x i8], ptr @b, i64 0, i64 2), align 2
store i16 2, ptr getelementptr inbounds ([8 x i8], ptr @b, i64 0, i64 3), align 1
store i16 1, ptr @b, align 2
ret void
}
define dso_local void @extract_vector_store_16_consecutive_bytes(<2 x i64> %v, ptr %ptr) #0 {
; CHECK-LABEL: extract_vector_store_16_consecutive_bytes:
; CHECK: # %bb.0:
; CHECK-NEXT: vmovups %xmm0, (%rdi)
; CHECK-NEXT: retq
%bc = bitcast <2 x i64> %v to <16 x i8>
%ext00 = extractelement <16 x i8> %bc, i32 0
%ext01 = extractelement <16 x i8> %bc, i32 1
%ext02 = extractelement <16 x i8> %bc, i32 2
%ext03 = extractelement <16 x i8> %bc, i32 3
%ext04 = extractelement <16 x i8> %bc, i32 4
%ext05 = extractelement <16 x i8> %bc, i32 5
%ext06 = extractelement <16 x i8> %bc, i32 6
%ext07 = extractelement <16 x i8> %bc, i32 7
%ext08 = extractelement <16 x i8> %bc, i32 8
%ext09 = extractelement <16 x i8> %bc, i32 9
%ext10 = extractelement <16 x i8> %bc, i32 10
%ext11 = extractelement <16 x i8> %bc, i32 11
%ext12 = extractelement <16 x i8> %bc, i32 12
%ext13 = extractelement <16 x i8> %bc, i32 13
%ext14 = extractelement <16 x i8> %bc, i32 14
%ext15 = extractelement <16 x i8> %bc, i32 15
%gep01 = getelementptr inbounds i8, ptr %ptr, i64 1
%gep02 = getelementptr inbounds i8, ptr %ptr, i64 2
%gep03 = getelementptr inbounds i8, ptr %ptr, i64 3
%gep04 = getelementptr inbounds i8, ptr %ptr, i64 4
%gep05 = getelementptr inbounds i8, ptr %ptr, i64 5
%gep06 = getelementptr inbounds i8, ptr %ptr, i64 6
%gep07 = getelementptr inbounds i8, ptr %ptr, i64 7
%gep08 = getelementptr inbounds i8, ptr %ptr, i64 8
%gep09 = getelementptr inbounds i8, ptr %ptr, i64 9
%gep10 = getelementptr inbounds i8, ptr %ptr, i64 10
%gep11 = getelementptr inbounds i8, ptr %ptr, i64 11
%gep12 = getelementptr inbounds i8, ptr %ptr, i64 12
%gep13 = getelementptr inbounds i8, ptr %ptr, i64 13
%gep14 = getelementptr inbounds i8, ptr %ptr, i64 14
%gep15 = getelementptr inbounds i8, ptr %ptr, i64 15
store i8 %ext00, ptr %ptr, align 1
store i8 %ext01, ptr %gep01, align 1
store i8 %ext02, ptr %gep02, align 1
store i8 %ext03, ptr %gep03, align 1
store i8 %ext04, ptr %gep04, align 1
store i8 %ext05, ptr %gep05, align 1
store i8 %ext06, ptr %gep06, align 1
store i8 %ext07, ptr %gep07, align 1
store i8 %ext08, ptr %gep08, align 1
store i8 %ext09, ptr %gep09, align 1
store i8 %ext10, ptr %gep10, align 1
store i8 %ext11, ptr %gep11, align 1
store i8 %ext12, ptr %gep12, align 1
store i8 %ext13, ptr %gep13, align 1
store i8 %ext14, ptr %gep14, align 1
store i8 %ext15, ptr %gep15, align 1
ret void
}
; PR34217 - https://bugs.llvm.org/show_bug.cgi?id=34217
define dso_local void @extract_vector_store_32_consecutive_bytes(<4 x i64> %v, ptr %ptr) #0 {
; CHECK-LABEL: extract_vector_store_32_consecutive_bytes:
; CHECK: # %bb.0:
; CHECK-NEXT: vmovups %ymm0, (%rdi)
; CHECK-NEXT: vzeroupper
; CHECK-NEXT: retq
%bc = bitcast <4 x i64> %v to <32 x i8>
%ext00 = extractelement <32 x i8> %bc, i32 0
%ext01 = extractelement <32 x i8> %bc, i32 1
%ext02 = extractelement <32 x i8> %bc, i32 2
%ext03 = extractelement <32 x i8> %bc, i32 3
%ext04 = extractelement <32 x i8> %bc, i32 4
%ext05 = extractelement <32 x i8> %bc, i32 5
%ext06 = extractelement <32 x i8> %bc, i32 6
%ext07 = extractelement <32 x i8> %bc, i32 7
%ext08 = extractelement <32 x i8> %bc, i32 8
%ext09 = extractelement <32 x i8> %bc, i32 9
%ext10 = extractelement <32 x i8> %bc, i32 10
%ext11 = extractelement <32 x i8> %bc, i32 11
%ext12 = extractelement <32 x i8> %bc, i32 12
%ext13 = extractelement <32 x i8> %bc, i32 13
%ext14 = extractelement <32 x i8> %bc, i32 14
%ext15 = extractelement <32 x i8> %bc, i32 15
%ext16 = extractelement <32 x i8> %bc, i32 16
%ext17 = extractelement <32 x i8> %bc, i32 17
%ext18 = extractelement <32 x i8> %bc, i32 18
%ext19 = extractelement <32 x i8> %bc, i32 19
%ext20 = extractelement <32 x i8> %bc, i32 20
%ext21 = extractelement <32 x i8> %bc, i32 21
%ext22 = extractelement <32 x i8> %bc, i32 22
%ext23 = extractelement <32 x i8> %bc, i32 23
%ext24 = extractelement <32 x i8> %bc, i32 24
%ext25 = extractelement <32 x i8> %bc, i32 25
%ext26 = extractelement <32 x i8> %bc, i32 26
%ext27 = extractelement <32 x i8> %bc, i32 27
%ext28 = extractelement <32 x i8> %bc, i32 28
%ext29 = extractelement <32 x i8> %bc, i32 29
%ext30 = extractelement <32 x i8> %bc, i32 30
%ext31 = extractelement <32 x i8> %bc, i32 31
%gep01 = getelementptr inbounds i8, ptr %ptr, i64 1
%gep02 = getelementptr inbounds i8, ptr %ptr, i64 2
%gep03 = getelementptr inbounds i8, ptr %ptr, i64 3
%gep04 = getelementptr inbounds i8, ptr %ptr, i64 4
%gep05 = getelementptr inbounds i8, ptr %ptr, i64 5
%gep06 = getelementptr inbounds i8, ptr %ptr, i64 6
%gep07 = getelementptr inbounds i8, ptr %ptr, i64 7
%gep08 = getelementptr inbounds i8, ptr %ptr, i64 8
%gep09 = getelementptr inbounds i8, ptr %ptr, i64 9
%gep10 = getelementptr inbounds i8, ptr %ptr, i64 10
%gep11 = getelementptr inbounds i8, ptr %ptr, i64 11
%gep12 = getelementptr inbounds i8, ptr %ptr, i64 12
%gep13 = getelementptr inbounds i8, ptr %ptr, i64 13
%gep14 = getelementptr inbounds i8, ptr %ptr, i64 14
%gep15 = getelementptr inbounds i8, ptr %ptr, i64 15
%gep16 = getelementptr inbounds i8, ptr %ptr, i64 16
%gep17 = getelementptr inbounds i8, ptr %ptr, i64 17
%gep18 = getelementptr inbounds i8, ptr %ptr, i64 18
%gep19 = getelementptr inbounds i8, ptr %ptr, i64 19
%gep20 = getelementptr inbounds i8, ptr %ptr, i64 20
%gep21 = getelementptr inbounds i8, ptr %ptr, i64 21
%gep22 = getelementptr inbounds i8, ptr %ptr, i64 22
%gep23 = getelementptr inbounds i8, ptr %ptr, i64 23
%gep24 = getelementptr inbounds i8, ptr %ptr, i64 24
%gep25 = getelementptr inbounds i8, ptr %ptr, i64 25
%gep26 = getelementptr inbounds i8, ptr %ptr, i64 26
%gep27 = getelementptr inbounds i8, ptr %ptr, i64 27
%gep28 = getelementptr inbounds i8, ptr %ptr, i64 28
%gep29 = getelementptr inbounds i8, ptr %ptr, i64 29
%gep30 = getelementptr inbounds i8, ptr %ptr, i64 30
%gep31 = getelementptr inbounds i8, ptr %ptr, i64 31
store i8 %ext00, ptr %ptr, align 1
store i8 %ext01, ptr %gep01, align 1
store i8 %ext02, ptr %gep02, align 1
store i8 %ext03, ptr %gep03, align 1
store i8 %ext04, ptr %gep04, align 1
store i8 %ext05, ptr %gep05, align 1
store i8 %ext06, ptr %gep06, align 1
store i8 %ext07, ptr %gep07, align 1
store i8 %ext08, ptr %gep08, align 1
store i8 %ext09, ptr %gep09, align 1
store i8 %ext10, ptr %gep10, align 1
store i8 %ext11, ptr %gep11, align 1
store i8 %ext12, ptr %gep12, align 1
store i8 %ext13, ptr %gep13, align 1
store i8 %ext14, ptr %gep14, align 1
store i8 %ext15, ptr %gep15, align 1
store i8 %ext16, ptr %gep16, align 1
store i8 %ext17, ptr %gep17, align 1
store i8 %ext18, ptr %gep18, align 1
store i8 %ext19, ptr %gep19, align 1
store i8 %ext20, ptr %gep20, align 1
store i8 %ext21, ptr %gep21, align 1
store i8 %ext22, ptr %gep22, align 1
store i8 %ext23, ptr %gep23, align 1
store i8 %ext24, ptr %gep24, align 1
store i8 %ext25, ptr %gep25, align 1
store i8 %ext26, ptr %gep26, align 1
store i8 %ext27, ptr %gep27, align 1
store i8 %ext28, ptr %gep28, align 1
store i8 %ext29, ptr %gep29, align 1
store i8 %ext30, ptr %gep30, align 1
store i8 %ext31, ptr %gep31, align 1
ret void
}
; https://bugs.llvm.org/show_bug.cgi?id=43446
define dso_local void @pr43446_0(i64 %x) {
; CHECK-LABEL: pr43446_0:
; CHECK: # %bb.0:
; CHECK-NEXT: movb $1, (%rdi)
; CHECK-NEXT: retq
%a = inttoptr i64 %x to ptr
store i8 -2, ptr %a, align 1
%b = inttoptr i64 %x to ptr
store i1 true, ptr %b, align 1
ret void
}
define dso_local void @pr43446_1(ptr %a) {
; CHECK-LABEL: pr43446_1:
; CHECK: # %bb.0:
; CHECK-NEXT: movb $1, (%rdi)
; CHECK-NEXT: retq
store i8 -2, ptr %a, align 1
store i1 true, ptr %a, align 1
ret void
}
define dso_local void @rotate16_in_place(ptr %p) {
; CHECK-LABEL: rotate16_in_place:
; CHECK: # %bb.0:
; CHECK-NEXT: rolw $8, (%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i8, ptr %p, i64 1
%i0 = load i8, ptr %p, align 1
%i1 = load i8, ptr %p1, align 1
store i8 %i1, ptr %p, align 1
store i8 %i0, ptr %p1, align 1
ret void
}
define dso_local void @rotate16(ptr %p, ptr %q) {
; CHECK-LABEL: rotate16:
; CHECK: # %bb.0:
; CHECK-NEXT: movzwl (%rdi), %eax
; CHECK-NEXT: rolw $8, %ax
; CHECK-NEXT: movw %ax, (%rsi)
; CHECK-NEXT: retq
%p1 = getelementptr i8, ptr %p, i64 1
%q1 = getelementptr i8, ptr %q, i64 1
%i0 = load i8, ptr %p, align 1
%i1 = load i8, ptr %p1, align 1
store i8 %i1, ptr %q, align 1
store i8 %i0, ptr %q1, align 1
ret void
}
define dso_local void @rotate32_in_place(ptr %p) {
; CHECK-LABEL: rotate32_in_place:
; CHECK: # %bb.0:
; CHECK-NEXT: roll $16, (%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i16, ptr %p, i64 1
%i0 = load i16, ptr %p, align 2
%i1 = load i16, ptr %p1, align 2
store i16 %i1, ptr %p, align 2
store i16 %i0, ptr %p1, align 2
ret void
}
define dso_local void @rotate32(ptr %p) {
; CHECK-LABEL: rotate32:
; CHECK: # %bb.0:
; CHECK-NEXT: movl (%rdi), %eax
; CHECK-NEXT: roll $16, %eax
; CHECK-NEXT: movl %eax, 84(%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i16, ptr %p, i64 1
%p42 = getelementptr i16, ptr %p, i64 42
%p43 = getelementptr i16, ptr %p, i64 43
%i0 = load i16, ptr %p, align 2
%i1 = load i16, ptr %p1, align 2
store i16 %i1, ptr %p42, align 2
store i16 %i0, ptr %p43, align 2
ret void
}
define dso_local void @rotate64_in_place(ptr %p) {
; CHECK-LABEL: rotate64_in_place:
; CHECK: # %bb.0:
; CHECK-NEXT: rolq $32, (%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i32, ptr %p, i64 1
%i0 = load i32, ptr %p, align 4
%i1 = load i32, ptr %p1, align 4
store i32 %i1, ptr %p, align 4
store i32 %i0, ptr %p1, align 4
ret void
}
define dso_local void @rotate64(ptr %p) {
; CHECK-LABEL: rotate64:
; CHECK: # %bb.0:
; CHECK-NEXT: movq (%rdi), %rax
; CHECK-NEXT: rolq $32, %rax
; CHECK-NEXT: movq %rax, 8(%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i32, ptr %p, i64 1
%p2 = getelementptr i32, ptr %p, i64 2
%p3 = getelementptr i32, ptr %p, i64 3
%i0 = load i32, ptr %p, align 4
%i1 = load i32, ptr %p1, align 4
store i32 %i1, ptr %p2, align 4
store i32 %i0, ptr %p3, align 4
ret void
}
define dso_local void @rotate64_iterate(ptr %p) {
; CHECK-LABEL: rotate64_iterate:
; CHECK: # %bb.0:
; CHECK-NEXT: movq (%rdi), %rax
; CHECK-NEXT: rolq $32, %rax
; CHECK-NEXT: movq %rax, 84(%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i16, ptr %p, i64 1
%p2 = getelementptr i16, ptr %p, i64 2
%p3 = getelementptr i16, ptr %p, i64 3
%p42 = getelementptr i16, ptr %p, i64 42
%p43 = getelementptr i16, ptr %p, i64 43
%p44 = getelementptr i16, ptr %p, i64 44
%p45 = getelementptr i16, ptr %p, i64 45
%i0 = load i16, ptr %p, align 2
%i1 = load i16, ptr %p1, align 2
%i2 = load i16, ptr %p2, align 2
%i3 = load i16, ptr %p3, align 2
store i16 %i2, ptr %p42, align 2
store i16 %i3, ptr %p43, align 2
store i16 %i0, ptr %p44, align 2
store i16 %i1, ptr %p45, align 2
ret void
}
; TODO: recognize this as 2 rotates?
define dso_local void @rotate32_consecutive(ptr %p) {
; CHECK-LABEL: rotate32_consecutive:
; CHECK: # %bb.0:
; CHECK-NEXT: movzwl (%rdi), %eax
; CHECK-NEXT: movzwl 2(%rdi), %ecx
; CHECK-NEXT: movzwl 4(%rdi), %edx
; CHECK-NEXT: movzwl 6(%rdi), %esi
; CHECK-NEXT: movw %cx, 84(%rdi)
; CHECK-NEXT: movw %ax, 86(%rdi)
; CHECK-NEXT: movw %si, 88(%rdi)
; CHECK-NEXT: movw %dx, 90(%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i16, ptr %p, i64 1
%p2 = getelementptr i16, ptr %p, i64 2
%p3 = getelementptr i16, ptr %p, i64 3
%p42 = getelementptr i16, ptr %p, i64 42
%p43 = getelementptr i16, ptr %p, i64 43
%p44 = getelementptr i16, ptr %p, i64 44
%p45 = getelementptr i16, ptr %p, i64 45
%i0 = load i16, ptr %p, align 2
%i1 = load i16, ptr %p1, align 2
%i2 = load i16, ptr %p2, align 2
%i3 = load i16, ptr %p3, align 2
store i16 %i1, ptr %p42, align 2
store i16 %i0, ptr %p43, align 2
store i16 %i3, ptr %p44, align 2
store i16 %i2, ptr %p45, align 2
ret void
}
; Same as above, but now the stores are not all consecutive.
define dso_local void @rotate32_twice(ptr %p) {
; CHECK-LABEL: rotate32_twice:
; CHECK: # %bb.0:
; CHECK-NEXT: movl (%rdi), %eax
; CHECK-NEXT: movl 4(%rdi), %ecx
; CHECK-NEXT: roll $16, %eax
; CHECK-NEXT: roll $16, %ecx
; CHECK-NEXT: movl %eax, 84(%rdi)
; CHECK-NEXT: movl %ecx, 108(%rdi)
; CHECK-NEXT: retq
%p1 = getelementptr i16, ptr %p, i64 1
%p2 = getelementptr i16, ptr %p, i64 2
%p3 = getelementptr i16, ptr %p, i64 3
%p42 = getelementptr i16, ptr %p, i64 42
%p43 = getelementptr i16, ptr %p, i64 43
%p54 = getelementptr i16, ptr %p, i64 54
%p55 = getelementptr i16, ptr %p, i64 55
%i0 = load i16, ptr %p, align 2
%i1 = load i16, ptr %p1, align 2
%i2 = load i16, ptr %p2, align 2
%i3 = load i16, ptr %p3, align 2
store i16 %i1, ptr %p42, align 2
store i16 %i0, ptr %p43, align 2
store i16 %i3, ptr %p54, align 2
store i16 %i2, ptr %p55, align 2
ret void
}
define dso_local void @trunc_i16_to_i8(i16 %x, ptr %p) {
; CHECK-LABEL: trunc_i16_to_i8:
; CHECK: # %bb.0:
; CHECK-NEXT: movw %di, (%rsi)
; CHECK-NEXT: retq
%t1 = trunc i16 %x to i8
%sh = lshr i16 %x, 8
%t2 = trunc i16 %sh to i8
store i8 %t1, ptr %p, align 1
%p1 = getelementptr inbounds i8, ptr %p, i64 1
store i8 %t2, ptr %p1, align 1
ret void
}
define dso_local void @trunc_i32_to_i8(i32 %x, ptr %p) {
; CHECK-LABEL: trunc_i32_to_i8:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, (%rsi)
; CHECK-NEXT: retq
%t1 = trunc i32 %x to i8
%sh1 = lshr i32 %x, 8
%t2 = trunc i32 %sh1 to i8
%sh2 = lshr i32 %x, 16
%t3 = trunc i32 %sh2 to i8
%sh3 = lshr i32 %x, 24
%t4 = trunc i32 %sh3 to i8
store i8 %t1, ptr %p, align 1
%p1 = getelementptr inbounds i8, ptr %p, i64 1
store i8 %t2, ptr %p1, align 1
%p2 = getelementptr inbounds i8, ptr %p, i64 2
store i8 %t3, ptr %p2, align 1
%p3 = getelementptr inbounds i8, ptr %p, i64 3
store i8 %t4, ptr %p3, align 1
ret void
}
define dso_local void @trunc_i32_to_i16(i32 %x, ptr %p) {
; CHECK-LABEL: trunc_i32_to_i16:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, (%rsi)
; CHECK-NEXT: retq
%t1 = trunc i32 %x to i16
%sh = lshr i32 %x, 16
%t2 = trunc i32 %sh to i16
store i16 %t1, ptr %p, align 2
%p1 = getelementptr inbounds i16, ptr %p, i64 1
store i16 %t2, ptr %p1, align 2
ret void
}
define dso_local void @be_i32_to_i16(i32 %x, ptr %p0) {
; CHECK-LABEL: be_i32_to_i16:
; CHECK: # %bb.0:
; CHECK-NEXT: rorl $16, %edi
; CHECK-NEXT: movl %edi, (%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i32 %x, 16
%t0 = trunc i32 %x to i16
%t1 = trunc i32 %sh1 to i16
%p1 = getelementptr inbounds i16, ptr %p0, i64 1
store i16 %t0, ptr %p1, align 2
store i16 %t1, ptr %p0, align 2
ret void
}
define dso_local void @be_i32_to_i16_order(i32 %x, ptr %p0) {
; CHECK-LABEL: be_i32_to_i16_order:
; CHECK: # %bb.0:
; CHECK-NEXT: rorl $16, %edi
; CHECK-NEXT: movl %edi, (%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i32 %x, 16
%t0 = trunc i32 %x to i16
%t1 = trunc i32 %sh1 to i16
%p1 = getelementptr inbounds i16, ptr %p0, i64 1
store i16 %t1, ptr %p0, align 2
store i16 %t0, ptr %p1, align 2
ret void
}
define dso_local void @trunc_i64_to_i8(i64 %x, ptr %p) {
; CHECK-LABEL: trunc_i64_to_i8:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, (%rsi)
; CHECK-NEXT: retq
%t1 = trunc i64 %x to i8
%sh1 = lshr i64 %x, 8
%t2 = trunc i64 %sh1 to i8
%sh2 = lshr i64 %x, 16
%t3 = trunc i64 %sh2 to i8
%sh3 = lshr i64 %x, 24
%t4 = trunc i64 %sh3 to i8
%sh4 = lshr i64 %x, 32
%t5 = trunc i64 %sh4 to i8
%sh5 = lshr i64 %x, 40
%t6 = trunc i64 %sh5 to i8
%sh6 = lshr i64 %x, 48
%t7 = trunc i64 %sh6 to i8
%sh7 = lshr i64 %x, 56
%t8 = trunc i64 %sh7 to i8
store i8 %t1, ptr %p, align 1
%p1 = getelementptr inbounds i8, ptr %p, i64 1
store i8 %t2, ptr %p1, align 1
%p2 = getelementptr inbounds i8, ptr %p, i64 2
store i8 %t3, ptr %p2, align 1
%p3 = getelementptr inbounds i8, ptr %p, i64 3
store i8 %t4, ptr %p3, align 1
%p4 = getelementptr inbounds i8, ptr %p, i64 4
store i8 %t5, ptr %p4, align 1
%p5 = getelementptr inbounds i8, ptr %p, i64 5
store i8 %t6, ptr %p5, align 1
%p6 = getelementptr inbounds i8, ptr %p, i64 6
store i8 %t7, ptr %p6, align 1
%p7 = getelementptr inbounds i8, ptr %p, i64 7
store i8 %t8, ptr %p7, align 1
ret void
}
define dso_local void @trunc_i64_to_i16(i64 %x, ptr %p) {
; CHECK-LABEL: trunc_i64_to_i16:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, (%rsi)
; CHECK-NEXT: retq
%t1 = trunc i64 %x to i16
%sh1 = lshr i64 %x, 16
%t2 = trunc i64 %sh1 to i16
%sh2 = lshr i64 %x, 32
%t3 = trunc i64 %sh2 to i16
%sh3 = lshr i64 %x, 48
%t4 = trunc i64 %sh3 to i16
store i16 %t1, ptr %p, align 2
%p1 = getelementptr inbounds i16, ptr %p, i64 1
store i16 %t2, ptr %p1, align 2
%p2 = getelementptr inbounds i16, ptr %p, i64 2
store i16 %t3, ptr %p2, align 2
%p3 = getelementptr inbounds i16, ptr %p, i64 3
store i16 %t4, ptr %p3, align 2
ret void
}
define dso_local void @trunc_i64_to_i32(i64 %x, ptr %p) {
; CHECK-LABEL: trunc_i64_to_i32:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, (%rsi)
; CHECK-NEXT: retq
%t1 = trunc i64 %x to i32
%sh = lshr i64 %x, 32
%t2 = trunc i64 %sh to i32
store i32 %t1, ptr %p, align 4
%p1 = getelementptr inbounds i32, ptr %p, i64 1
store i32 %t2, ptr %p1, align 4
ret void
}
define dso_local void @be_i64_to_i32(i64 %x, ptr %p0) {
; CHECK-LABEL: be_i64_to_i32:
; CHECK: # %bb.0:
; CHECK-NEXT: rorq $32, %rdi
; CHECK-NEXT: movq %rdi, (%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i64 %x, 32
%t0 = trunc i64 %x to i32
%t1 = trunc i64 %sh1 to i32
%p1 = getelementptr inbounds i32, ptr %p0, i64 1
store i32 %t0, ptr %p1, align 4
store i32 %t1, ptr %p0, align 4
ret void
}
define dso_local void @be_i64_to_i32_order(i64 %x, ptr %p0) {
; CHECK-LABEL: be_i64_to_i32_order:
; CHECK: # %bb.0:
; CHECK-NEXT: rorq $32, %rdi
; CHECK-NEXT: movq %rdi, (%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i64 %x, 32
%t0 = trunc i64 %x to i32
%t1 = trunc i64 %sh1 to i32
%p1 = getelementptr inbounds i32, ptr %p0, i64 1
store i32 %t1, ptr %p0, align 4
store i32 %t0, ptr %p1, align 4
ret void
}
; https://llvm.org/PR50623
; It is a miscompile to merge the stores if we are not
; writing all of the bytes from the source value.
define void @merge_hole(i32 %x, ptr %p) {
; CHECK-LABEL: merge_hole:
; CHECK: # %bb.0:
; CHECK-NEXT: movb %dil, (%rsi)
; CHECK-NEXT: shrl $16, %edi
; CHECK-NEXT: movw %di, 2(%rsi)
; CHECK-NEXT: retq
%p2 = getelementptr inbounds i16, ptr %p, i64 1
%x3 = trunc i32 %x to i8
store i8 %x3, ptr %p, align 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, ptr %p2, align 1
ret void
}
; Change the order of the stores.
; It is a miscompile to merge the stores if we are not
; writing all of the bytes from the source value.
define void @merge_hole2(i32 %x, ptr %p) {
; CHECK-LABEL: merge_hole2:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: shrl $16, %eax
; CHECK-NEXT: movw %ax, 2(%rsi)
; CHECK-NEXT: movb %dil, (%rsi)
; CHECK-NEXT: retq
%p2 = getelementptr inbounds i16, ptr %p, i64 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, ptr %p2, align 1
%x3 = trunc i32 %x to i8
store i8 %x3, ptr %p, align 1
ret void
}
; Change offset.
; It is a miscompile to merge the stores if we are not
; writing all of the bytes from the source value.
define void @merge_hole3(i32 %x, ptr %p) {
; CHECK-LABEL: merge_hole3:
; CHECK: # %bb.0:
; CHECK-NEXT: movb %dil, 1(%rsi)
; CHECK-NEXT: shrl $16, %edi
; CHECK-NEXT: movw %di, 2(%rsi)
; CHECK-NEXT: retq
%p1 = getelementptr inbounds i8, ptr %p, i64 1
%p2 = getelementptr inbounds i16, ptr %p, i64 1
%x3 = trunc i32 %x to i8
store i8 %x3, ptr %p1, align 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, ptr %p2, align 1
ret void
}
; Change offset.
; It is a miscompile to merge the stores if we are not
; writing all of the bytes from the source value.
define void @merge_hole4(i32 %x, ptr %p) {
; CHECK-LABEL: merge_hole4:
; CHECK: # %bb.0:
; CHECK-NEXT: movb %dil, 2(%rsi)
; CHECK-NEXT: shrl $16, %edi
; CHECK-NEXT: movw %di, (%rsi)
; CHECK-NEXT: retq
%p2 = getelementptr inbounds i8, ptr %p, i64 2
%x3 = trunc i32 %x to i8
store i8 %x3, ptr %p2, align 1
%sh = lshr i32 %x, 16
%x01 = trunc i32 %sh to i16
store i16 %x01, ptr %p, align 1
ret void
}