; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=aarch64 -sink-insts-to-avoid-spills | FileCheck %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
@A = external dso_local global [100 x i32], align 4
define i32 @sink_load_and_copy(i32 %n) {
; CHECK-LABEL: sink_load_and_copy:
; CHECK: // %bb.0: // %entry
; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill
; CHECK-NEXT: .cfi_def_cfa_offset 32
; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
; CHECK-NEXT: .cfi_offset w19, -8
; CHECK-NEXT: .cfi_offset w20, -16
; CHECK-NEXT: .cfi_offset w21, -24
; CHECK-NEXT: .cfi_offset w30, -32
; CHECK-NEXT: mov w19, w0
; CHECK-NEXT: cmp w0, #1
; CHECK-NEXT: b.lt .LBB0_3
; CHECK-NEXT: // %bb.1: // %for.body.preheader
; CHECK-NEXT: adrp x8, A
; CHECK-NEXT: mov w20, w19
; CHECK-NEXT: ldr w21, [x8, :lo12:A]
; CHECK-NEXT: .LBB0_2: // %for.body
; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
; CHECK-NEXT: mov w0, w21
; CHECK-NEXT: bl _Z3usei
; CHECK-NEXT: sdiv w20, w20, w0
; CHECK-NEXT: subs w19, w19, #1
; CHECK-NEXT: b.ne .LBB0_2
; CHECK-NEXT: b .LBB0_4
; CHECK-NEXT: .LBB0_3:
; CHECK-NEXT: mov w20, w19
; CHECK-NEXT: .LBB0_4: // %for.cond.cleanup
; CHECK-NEXT: mov w0, w20
; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload
; CHECK-NEXT: ret
entry:
%cmp63 = icmp sgt i32 %n, 0
br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader:
%0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4
br label %for.body
for.cond.cleanup:
%sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ]
ret i32 %sum.0.lcssa
for.body:
%lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ]
%sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ]
%call = tail call i32 @_Z3usei(i32 %0)
%div = sdiv i32 %sum.065, %call
%lsr.iv.next = add i32 %lsr.iv, -1
%exitcond.not = icmp eq i32 %lsr.iv.next, 0
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
}
define i32 @cant_sink_successive_call(i32 %n) {
; CHECK-LABEL: cant_sink_successive_call:
; CHECK: // %bb.0: // %entry
; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill
; CHECK-NEXT: .cfi_def_cfa_offset 32
; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
; CHECK-NEXT: .cfi_offset w19, -8
; CHECK-NEXT: .cfi_offset w20, -16
; CHECK-NEXT: .cfi_offset w21, -24
; CHECK-NEXT: .cfi_offset w30, -32
; CHECK-NEXT: mov w19, w0
; CHECK-NEXT: cmp w0, #1
; CHECK-NEXT: b.lt .LBB1_3
; CHECK-NEXT: // %bb.1: // %for.body.preheader
; CHECK-NEXT: adrp x8, A
; CHECK-NEXT: mov w0, w19
; CHECK-NEXT: ldr w20, [x8, :lo12:A]
; CHECK-NEXT: bl _Z3usei
; CHECK-NEXT: mov w21, w19
; CHECK-NEXT: .LBB1_2: // %for.body
; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
; CHECK-NEXT: mov w0, w20
; CHECK-NEXT: bl _Z3usei
; CHECK-NEXT: sdiv w21, w21, w0
; CHECK-NEXT: subs w19, w19, #1
; CHECK-NEXT: b.ne .LBB1_2
; CHECK-NEXT: b .LBB1_4
; CHECK-NEXT: .LBB1_3:
; CHECK-NEXT: mov w21, w19
; CHECK-NEXT: .LBB1_4: // %for.cond.cleanup
; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
; CHECK-NEXT: mov w0, w21
; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload
; CHECK-NEXT: ret
entry:
%cmp63 = icmp sgt i32 %n, 0
br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader:
%0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4
%call0 = tail call i32 @_Z3usei(i32 %n)
br label %for.body
for.cond.cleanup:
%sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ]
ret i32 %sum.0.lcssa
for.body:
%lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ]
%sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ]
%call = tail call i32 @_Z3usei(i32 %0)
%div = sdiv i32 %sum.065, %call
%lsr.iv.next = add i32 %lsr.iv, -1
%exitcond.not = icmp eq i32 %lsr.iv.next, 0
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
}
define i32 @cant_sink_successive_store(i32* nocapture readnone %store, i32 %n) {
; CHECK-LABEL: cant_sink_successive_store:
; CHECK: // %bb.0: // %entry
; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill
; CHECK-NEXT: .cfi_def_cfa_offset 32
; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
; CHECK-NEXT: .cfi_offset w19, -8
; CHECK-NEXT: .cfi_offset w20, -16
; CHECK-NEXT: .cfi_offset w21, -24
; CHECK-NEXT: .cfi_offset w30, -32
; CHECK-NEXT: mov w19, w1
; CHECK-NEXT: cmp w1, #1
; CHECK-NEXT: b.lt .LBB2_3
; CHECK-NEXT: // %bb.1: // %for.body.preheader
; CHECK-NEXT: adrp x8, A
; CHECK-NEXT: mov w9, #42
; CHECK-NEXT: mov w20, w19
; CHECK-NEXT: ldr w21, [x8, :lo12:A]
; CHECK-NEXT: str w9, [x0]
; CHECK-NEXT: .LBB2_2: // %for.body
; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
; CHECK-NEXT: mov w0, w21
; CHECK-NEXT: bl _Z3usei
; CHECK-NEXT: sdiv w20, w20, w0
; CHECK-NEXT: subs w19, w19, #1
; CHECK-NEXT: b.ne .LBB2_2
; CHECK-NEXT: b .LBB2_4
; CHECK-NEXT: .LBB2_3:
; CHECK-NEXT: mov w20, w19
; CHECK-NEXT: .LBB2_4: // %for.cond.cleanup
; CHECK-NEXT: mov w0, w20
; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload
; CHECK-NEXT: ret
entry:
%cmp63 = icmp sgt i32 %n, 0
br i1 %cmp63, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader:
%0 = load i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @A, i64 0, i64 0), align 4
store i32 42, i32* %store, align 4
br label %for.body
for.cond.cleanup:
%sum.0.lcssa = phi i32 [ %n, %entry ], [ %div, %for.body ]
ret i32 %sum.0.lcssa
for.body:
%lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.body ]
%sum.065 = phi i32 [ %div, %for.body ], [ %n, %for.body.preheader ]
%call = tail call i32 @_Z3usei(i32 %0)
%div = sdiv i32 %sum.065, %call
%lsr.iv.next = add i32 %lsr.iv, -1
%exitcond.not = icmp eq i32 %lsr.iv.next, 0
br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
}
declare i32 @_Z3usei(i32)