pr42452.ll
1.29 KB
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -O0 | FileCheck %s
@b = external global i64, align 8
define void @foo(i1 %c, <2 x i64> %x) {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movb %dil, %al
; CHECK-NEXT: movb %al, {{[-0-9]+}}(%r{{[sb]}}p) # 1-byte Spill
; CHECK-NEXT: movq %xmm0, %rax
; CHECK-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,3,2,3]
; CHECK-NEXT: movq %xmm0, %rax
; CHECK-NEXT: movq %rax, {{[-0-9]+}}(%r{{[sb]}}p) # 8-byte Spill
; CHECK-NEXT: .LBB0_1: # %for.body
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movb {{[-0-9]+}}(%r{{[sb]}}p), %al # 1-byte Reload
; CHECK-NEXT: testb $1, %al
; CHECK-NEXT: jne .LBB0_1
; CHECK-NEXT: jmp .LBB0_2
; CHECK-NEXT: .LBB0_2: # %for.end
; CHECK-NEXT: movq {{[-0-9]+}}(%r{{[sb]}}p), %rax # 8-byte Reload
; CHECK-NEXT: movq %rax, b
; CHECK-NEXT: retq
entry:
%0 = bitcast <2 x i64> %x to i128
br label %for.body
for.body: ; preds = %for.body, %entry
br i1 %c, label %for.body, label %for.end
for.end: ; preds = %for.body
%1 = lshr i128 %0, 64
%2 = trunc i128 %1 to i64
store i64 %2, i64* @b, align 8
ret void
}