| NAKAMURA Takumi | 5a495a5 | 2012-12-30 00:33:26 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -basicaa -gvn -S | FileCheck %s |
| Dan Gohman | ccb4584 | 2009-11-09 19:29:11 +0000 | [diff] [blame] | 2 | |
| 3 | %t = type { i32 } |
| 4 | declare void @test1f(i8*) |
| 5 | |
| 6 | define void @test1(%t* noalias %stuff ) { |
| 7 | %p = getelementptr inbounds %t* %stuff, i32 0, i32 0 |
| 8 | %before = load i32* %p |
| 9 | |
| 10 | call void @test1f(i8* null) |
| 11 | |
| 12 | %after = load i32* %p ; <--- This should be a dead load |
| Dan Gohman | fb41936 | 2010-01-05 17:55:26 +0000 | [diff] [blame] | 13 | %sum = add i32 %before, %after |
| Dan Gohman | ccb4584 | 2009-11-09 19:29:11 +0000 | [diff] [blame] | 14 | |
| 15 | store i32 %sum, i32* %p |
| 16 | ret void |
| 17 | ; CHECK: load |
| 18 | ; CHECK-NOT: load |
| 19 | ; CHECK: ret void |
| 20 | } |