| ; Test that the strncpy library call simplifier works correctly. |
| ; |
| ; RUN: opt < %s -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" |
| |
| @hello = constant [6 x i8] c"hello\00" |
| @a = common global [32 x i8] zeroinitializer, align 1 |
| |
| declare i16* @strncpy(i8*, i8*, i32) |
| |
| ; Check that 'strncpy' functions with the wrong prototype aren't simplified. |
| |
| define void @test_no_simplify1() { |
| ; CHECK: @test_no_simplify1 |
| %dst = getelementptr [32 x i8]* @a, i32 0, i32 0 |
| %src = getelementptr [6 x i8]* @hello, i32 0, i32 0 |
| |
| call i16* @strncpy(i8* %dst, i8* %src, i32 6) |
| ; CHECK: call i16* @strncpy |
| ret void |
| } |
