| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind |
| |
| ; Same src/dest. |
| |
| define void @test1(i8* %a) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: ret void |
| ; |
| tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i1 false) |
| ret void |
| } |
| |
| ; PR8267 - same src/dest, but volatile. |
| |
| define void @test2(i8* %a) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[A:%.*]], i8* [[A]], i32 100, i1 true) |
| ; CHECK-NEXT: ret void |
| ; |
| tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i1 true) |
| ret void |
| } |
| |
| ; 17179869184 == 0x400000000 - make sure that doesn't get truncated to 32-bit. |
| |
| define void @test3(i8* %d, i8* %s) { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(17179869184) [[D:%.*]], i8* nonnull align 4 dereferenceable(17179869184) [[S:%.*]], i64 17179869184, i1 false) |
| ; CHECK-NEXT: ret void |
| ; |
| tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %d, i8* align 4 %s, i64 17179869184, i1 false) |
| ret void |
| } |
| |
| @UnknownConstant = external constant i128 |
| |
| define void @memcpy_to_constant(i8* %src) { |
| ; CHECK-LABEL: @memcpy_to_constant( |
| ; CHECK-NEXT: ret void |
| ; |
| %dest = bitcast i128* @UnknownConstant to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 16, i1 false) |
| ret void |
| } |