source: icGREP/icgrep-devel/llvm-3.8.0.src/test/Analysis/GlobalsModRef/chaining-analysis.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 722 bytes
Line 
1; RUN: opt < %s -basicaa -globals-aa -gvn -S | FileCheck %s
2
3; This test requires the use of previous analyses to determine that
4; doesnotmodX does not modify X (because 'sin' doesn't).
5
6@X = internal global i32 4              ; <i32*> [#uses=2]
7
8declare double @sin(double) readnone
9
10define i32 @test(i32* %P) {
11; CHECK:      @test
12; CHECK-NEXT: store i32 12, i32* @X
13; CHECK-NEXT: call double @doesnotmodX(double 1.000000e+00)
14; CHECK-NEXT: ret i32 12
15        store i32 12, i32* @X
16        call double @doesnotmodX( double 1.000000e+00 )         ; <double>:1 [#uses=0]
17        %V = load i32, i32* @X          ; <i32> [#uses=1]
18        ret i32 %V
19}
20
21define double @doesnotmodX(double %V) {
22        %V2 = call double @sin( double %V ) readnone            ; <double> [#uses=1]
23        ret double %V2
24}
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