47 lines
1.5 KiB
LLVM
47 lines
1.5 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
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target triple = "i386-apple-macosx10.0.0"
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; Instcombine should be able to do trivial CSE of loads.
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define i32 @test1(i32* %p) {
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%t0 = getelementptr i32, i32* %p, i32 1
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%y = load i32, i32* %t0
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%t1 = getelementptr i32, i32* %p, i32 1
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%x = load i32, i32* %t1
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%a = sub i32 %y, %x
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ret i32 %a
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; CHECK-LABEL: @test1(
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; CHECK: ret i32 0
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}
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; PR7429
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@.str = private constant [4 x i8] c"XYZ\00"
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define float @test2() {
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%tmp = load float, float* bitcast ([4 x i8]* @.str to float*), align 1
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ret float %tmp
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; CHECK-LABEL: @test2(
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; CHECK: ret float 0x3806965600000000
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}
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@rslts32 = global [36 x i32] zeroinitializer, align 4
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@expect32 = internal constant [36 x i32][ i32 1, i32 2, i32 0, i32 100, i32 3,
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i32 4, i32 0, i32 -7, i32 4, i32 4, i32 8, i32 8, i32 1, i32 3, i32 8, i32 3,
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i32 4, i32 -2, i32 2, i32 8, i32 83, i32 77, i32 8, i32 17, i32 77, i32 88, i32
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22, i32 33, i32 44, i32 88, i32 77, i32 4, i32 4, i32 7, i32 -7, i32 -8] ,
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align 4
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; PR14986
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define void @test3() nounwind {
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; This is a weird way of computing zero.
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%l = load i32, i32* getelementptr ([36 x i32], [36 x i32]* @expect32, i32 29826161, i32 28), align 4
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store i32 %l, i32* getelementptr ([36 x i32], [36 x i32]* @rslts32, i32 29826161, i32 28), align 4
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ret void
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; CHECK-LABEL: @test3(
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; CHECK: store i32 1, i32* getelementptr inbounds ([36 x i32], [36 x i32]* @rslts32, i32 0, i32 0)
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}
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