diff options
Diffstat (limited to 'test/CodeGen/X86/memcpy.ll')
| -rw-r--r-- | test/CodeGen/X86/memcpy.ll | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/test/CodeGen/X86/memcpy.ll b/test/CodeGen/X86/memcpy.ll index 5a3ae77..7bc31be 100644 --- a/test/CodeGen/X86/memcpy.ll +++ b/test/CodeGen/X86/memcpy.ll @@ -1,17 +1,57 @@ -; RUN: llc < %s -march=x86-64 | grep call.*memcpy | count 2 +; RUN: llc < %s -march=x86-64 | FileCheck %s -declare void @llvm.memcpy.i64(i8*, i8*, i64, i32) +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind -define i8* @my_memcpy(i8* %a, i8* %b, i64 %n) nounwind { + +; Variable memcpy's should lower to calls. +define i8* @test1(i8* %a, i8* %b, i64 %n) nounwind { entry: - tail call void @llvm.memcpy.i64( i8* %a, i8* %b, i64 %n, i32 1 ) + tail call void @llvm.memcpy.p0i8.p0i8.i64( i8* %a, i8* %b, i64 %n, i32 1, i1 0 ) ret i8* %a + +; CHECK: test1: +; CHECK: memcpy } -define i8* @my_memcpy2(i64* %a, i64* %b, i64 %n) nounwind { +; Variable memcpy's should lower to calls. +define i8* @test2(i64* %a, i64* %b, i64 %n) nounwind { entry: %tmp14 = bitcast i64* %a to i8* %tmp25 = bitcast i64* %b to i8* - tail call void @llvm.memcpy.i64(i8* %tmp14, i8* %tmp25, i64 %n, i32 8 ) + tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp14, i8* %tmp25, i64 %n, i32 8, i1 0 ) ret i8* %tmp14 + +; CHECK: test2: +; CHECK: memcpy +} + +; Large constant memcpy's should lower to a call when optimizing for size. +; PR6623 +define void @test3(i8* nocapture %A, i8* nocapture %B) nounwind optsize noredzone { +entry: + tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false) + ret void +; CHECK: test3: +; CHECK: memcpy } + +; Large constant memcpy's should be inlined when not optimizing for size. +define void @test4(i8* nocapture %A, i8* nocapture %B) nounwind noredzone { +entry: + tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %A, i8* %B, i64 64, i32 1, i1 false) + ret void +; CHECK: test4: +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +; CHECK: movq +} + |
