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17 lines
531 B
LLVM
17 lines
531 B
LLVM
; RUN: opt < %s -basicaa -gvn -instcombine -S | FileCheck %s
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; PR1600
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declare i16 @llvm.cttz.i16(i16, i1)
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define i32 @test(i32* %P, i16* %Q) {
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; CHECK: ret i32 0
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%A = load i16* %Q ; <i16> [#uses=1]
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%x = load i32* %P ; <i32> [#uses=1]
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%B = call i16 @llvm.cttz.i16( i16 %A, i1 true ) ; <i16> [#uses=1]
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%y = load i32* %P ; <i32> [#uses=1]
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store i16 %B, i16* %Q
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%z = sub i32 %x, %y ; <i32> [#uses=1]
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ret i32 %z
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}
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