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This update was done with the following bash script:
find test/Transforms -name "*.ll" | \
while read NAME; do
echo "$NAME"
if ! grep -q "^; *RUN: *llc" $NAME; then
TEMP=`mktemp -t temp`
cp $NAME $TEMP
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llvm-svn: 186268
33 lines
681 B
LLVM
33 lines
681 B
LLVM
; RUN: opt -instcombine -S < %s | FileCheck %s
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; Check that code corresponding to the following C function is
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; simplified into a single ASR operation:
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;
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; int test_asr(int a, int b) {
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; return a < 0 ? -(-a - 1 >> b) - 1 : a >> b;
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; }
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;
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define i32 @test_asr(i32 %a, i32 %b) {
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entry:
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%c = icmp slt i32 %a, 0
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br i1 %c, label %bb2, label %bb3
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bb2:
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%t1 = sub i32 0, %a
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%not = sub i32 %t1, 1
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%d = ashr i32 %not, %b
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%t2 = sub i32 0, %d
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%not2 = sub i32 %t2, 1
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br label %bb4
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bb3:
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%e = ashr i32 %a, %b
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br label %bb4
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bb4:
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%f = phi i32 [ %not2, %bb2 ], [ %e, %bb3 ]
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ret i32 %f
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; CHECK-LABEL: @test_asr(
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; CHECK: bb4:
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; CHECK: %f = ashr i32 %a, %b
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; CHECK: ret i32 %f
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}
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