| ; Test that the memcpy 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 @memcpy(i8*, i8*, i32) |
| |
| ; Check that memcpy functions with the wrong prototype (doesn't return a pointer) aren't simplified. |
| |
| define i8 @test_no_simplify1(i8* %mem1, i8* %mem2, i32 %size) { |
| ; CHECK-LABEL: @test_no_simplify1( |
| ; CHECK-NEXT: [[RET:%.*]] = call i8 @memcpy(i8* %mem1, i8* %mem2, i32 %size) |
| ; CHECK-NEXT: ret i8 [[RET]] |
| ; |
| %ret = call i8 @memcpy(i8* %mem1, i8* %mem2, i32 %size) |
| ret i8 %ret |
| } |
