| Chris Lattner | f8feba3 | 2010-07-12 00:21:10 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -instcombine -S | FileCheck %s |
| Chris Lattner | fd4a09f | 2010-07-12 00:22:51 +0000 | [diff] [blame] | 2 | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| 3 | target triple = "x86_64-apple-darwin10.0.0" |
| Dan Gohman | bc02784 | 2008-10-15 23:19:35 +0000 | [diff] [blame] | 4 | |
| 5 | ; Instcombine should be able to do trivial CSE of loads. |
| 6 | |
| Chris Lattner | f8feba3 | 2010-07-12 00:21:10 +0000 | [diff] [blame] | 7 | define i32 @test1(i32* %p) { |
| 8 | %t0 = getelementptr i32* %p, i32 1 |
| 9 | %y = load i32* %t0 |
| 10 | %t1 = getelementptr i32* %p, i32 1 |
| 11 | %x = load i32* %t1 |
| 12 | %a = sub i32 %y, %x |
| 13 | ret i32 %a |
| 14 | ; CHECK: @test1 |
| 15 | ; CHECK: ret i32 0 |
| Dan Gohman | bc02784 | 2008-10-15 23:19:35 +0000 | [diff] [blame] | 16 | } |
| Chris Lattner | fd4a09f | 2010-07-12 00:22:51 +0000 | [diff] [blame] | 17 | |
| 18 | |
| 19 | ; PR7429 |
| 20 | @.str = private constant [4 x i8] c"XYZ\00" |
| 21 | define float @test2() { |
| 22 | %tmp = load float* bitcast ([4 x i8]* @.str to float*), align 1 |
| 23 | ret float %tmp |
| 24 | |
| 25 | ; CHECK: @test2 |
| 26 | ; CHECK: ret float 0x3806965600000000 |
| 27 | } |