| ; Test that the memmove 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" |
| |
| declare i8* @memmove(i8*, i8*, i32) |
| |
| ; Check memmove(mem1, mem2, size) -> llvm.memmove(mem1, mem2, size, 1). |
| |
| define i8* @test_simplify1(i8* %mem1, i8* %mem2, i32 %size) { |
| ; CHECK: @test_simplify1 |
| %ret = call i8* @memmove(i8* %mem1, i8* %mem2, i32 %size) |
| ; CHECK: call void @llvm.memmove |
| ret i8* %ret |
| ; CHECK: ret i8* %mem1 |
| } |
