| Meador Inge | 067294b | 2012-10-31 03:33:00 +0000 | [diff] [blame] | 1 | ; Test that the strncpy library call simplifier works correctly. |
| 2 | ; |
| 3 | ; RUN: opt < %s -instcombine -S | FileCheck %s |
| 4 | |
| 5 | 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" |
| 6 | |
| 7 | @hello = constant [6 x i8] c"hello\00" |
| 8 | @a = common global [32 x i8] zeroinitializer, align 1 |
| 9 | |
| 10 | declare i16* @strncpy(i8*, i8*, i32) |
| 11 | |
| 12 | ; Check that 'strncpy' functions with the wrong prototype aren't simplified. |
| 13 | |
| 14 | define void @test_no_simplify1() { |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame^] | 15 | ; CHECK-LABEL: @test_no_simplify1( |
| Meador Inge | 067294b | 2012-10-31 03:33:00 +0000 | [diff] [blame] | 16 | %dst = getelementptr [32 x i8]* @a, i32 0, i32 0 |
| 17 | %src = getelementptr [6 x i8]* @hello, i32 0, i32 0 |
| 18 | |
| 19 | call i16* @strncpy(i8* %dst, i8* %src, i32 6) |
| 20 | ; CHECK: call i16* @strncpy |
| 21 | ret void |
| 22 | } |