| ; RUN: opt < %s -passes=instcombine -S | FileCheck %s |
| 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" |
| target triple = "i386-apple-macosx10.0.0" |
| |
| ; Instcombine should be able to do trivial CSE of loads. |
| |
| define i32 @test1(ptr %p) { |
| %t0 = getelementptr i32, ptr %p, i32 1 |
| %y = load i32, ptr %t0 |
| %t1 = getelementptr i32, ptr %p, i32 1 |
| %x = load i32, ptr %t1 |
| %a = sub i32 %y, %x |
| ret i32 %a |
| ; CHECK-LABEL: @test1( |
| ; CHECK: ret i32 0 |
| } |
| |
| |
| ; PR7429 |
| @.str = private constant [4 x i8] c"XYZ\00" |
| define float @test2() { |
| %tmp = load float, ptr @.str, align 1 |
| ret float %tmp |
| |
| ; CHECK-LABEL: @test2( |
| ; CHECK: ret float 0x3806965600000000 |
| } |
| |
| @rslts32 = global [36 x i32] zeroinitializer, align 4 |
| |
| @expect32 = internal constant [36 x i32][ i32 1, i32 2, i32 0, i32 100, i32 3, |
| i32 4, i32 0, i32 -7, i32 4, i32 4, i32 8, i32 8, i32 1, i32 3, i32 8, i32 3, |
| i32 4, i32 -2, i32 2, i32 8, i32 83, i32 77, i32 8, i32 17, i32 77, i32 88, i32 |
| 22, i32 33, i32 44, i32 88, i32 77, i32 4, i32 4, i32 7, i32 -7, i32 -8] , |
| align 4 |
| |
| ; PR14986 |
| define void @test3() nounwind { |
| ; This is a weird way of computing zero. |
| %l = load i32, ptr getelementptr ([36 x i32], ptr @expect32, i32 29826161, i32 28), align 4 |
| store i32 %l, ptr getelementptr ([36 x i32], ptr @rslts32, i32 29826161, i32 28), align 4 |
| ret void |
| |
| ; CHECK-LABEL: @test3( |
| ; CHECK: store i32 1, ptr @rslts32 |
| } |