25 lines
723 B
LLVM
25 lines
723 B
LLVM
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; RUN: opt < %s -basic-aa -globals-aa -gvn -S | FileCheck %s
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; This test requires the use of previous analyses to determine that
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; doesnotmodX does not modify X (because 'sin' doesn't).
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@X = internal global i32 4 ; <i32*> [#uses=2]
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declare double @sin(double) readnone
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define i32 @test(i32* %P) {
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; CHECK: @test
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; CHECK-NEXT: store i32 12, i32* @X
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; CHECK-NEXT: call double @doesnotmodX(double 1.000000e+00)
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; CHECK-NEXT: ret i32 12
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store i32 12, i32* @X
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call double @doesnotmodX( double 1.000000e+00 ) ; <double>:1 [#uses=0]
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%V = load i32, i32* @X ; <i32> [#uses=1]
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ret i32 %V
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}
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define double @doesnotmodX(double %V) {
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%V2 = call double @sin( double %V ) readnone ; <double> [#uses=1]
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ret double %V2
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}
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