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c06b5bf340
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133124 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
775 B
LLVM
37 lines
775 B
LLVM
; RUN: llc < %s -march=x86 | FileCheck %s
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;; Simple case
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define i32 @test1(i8 %x) nounwind readnone {
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%A = and i8 %x, -32
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%B = zext i8 %A to i32
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ret i32 %B
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}
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; CHECK: test1
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; CHECK: movzbl
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; CHECK-NEXT: andl {{.*}}224
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;; Multiple uses of %x but easily extensible.
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define i32 @test2(i8 %x) nounwind readnone {
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%A = and i8 %x, -32
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%B = zext i8 %A to i32
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%C = or i8 %x, 63
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%D = zext i8 %C to i32
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%E = add i32 %B, %D
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ret i32 %E
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}
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; CHECK: test2
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; CHECK: movzbl
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; CHECK-NEXT: orl {{.*}}63
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; CHECK-NEXT: andl {{.*}}224
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declare void @use(i32, i8)
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;; Multiple uses of %x where we shouldn't extend the load.
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define void @test3(i8 %x) nounwind readnone {
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%A = and i8 %x, -32
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%B = zext i8 %A to i32
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call void @use(i32 %B, i8 %x)
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ret void
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}
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; CHECK: test3
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