| Chris Lattner | 463716d | 2009-10-05 02:47:47 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -instcombine -S | FileCheck %s |
| 2 | |
| 3 | 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" |
| 4 | target triple = "x86_64-apple-darwin10.0" |
| 5 | |
| 6 | declare noalias i8* @malloc(i64) nounwind |
| 7 | declare void @free(i8*) |
| 8 | |
| 9 | ; PR5130 |
| 10 | define i1 @test1() { |
| 11 | %A = call noalias i8* @malloc(i64 4) nounwind |
| 12 | %B = icmp eq i8* %A, null |
| Duncan Sands | f162eac | 2010-05-27 19:09:06 +0000 | [diff] [blame] | 13 | store i8 0, i8* %A |
| Chris Lattner | 463716d | 2009-10-05 02:47:47 +0000 | [diff] [blame] | 14 | |
| 15 | call void @free(i8* %A) |
| 16 | ret i1 %B |
| 17 | |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 18 | ; CHECK-LABEL: @test1( |
| Nuno Lopes | fa0dffc | 2012-07-06 23:09:25 +0000 | [diff] [blame] | 19 | ; CHECK: ret i1 false |
| 20 | } |
| 21 | |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 22 | ; CHECK-LABEL: @test2( |
| Nuno Lopes | fa0dffc | 2012-07-06 23:09:25 +0000 | [diff] [blame] | 23 | define noalias i8* @test2() nounwind { |
| 24 | entry: |
| 25 | ; CHECK: @malloc |
| 26 | %A = call noalias i8* @malloc(i64 4) nounwind |
| 27 | ; CHECK: icmp eq |
| 28 | %tobool = icmp eq i8* %A, null |
| 29 | ; CHECK: br i1 |
| 30 | br i1 %tobool, label %return, label %if.end |
| 31 | |
| 32 | if.end: |
| 33 | ; CHECK: store |
| 34 | store i8 7, i8* %A |
| 35 | br label %return |
| 36 | |
| 37 | return: |
| 38 | ; CHECK: phi |
| 39 | %retval.0 = phi i8* [ %A, %if.end ], [ null, %entry ] |
| 40 | ret i8* %retval.0 |
| Chris Lattner | 463716d | 2009-10-05 02:47:47 +0000 | [diff] [blame] | 41 | } |