From a46c36b8f460923bf3fc351bd0e2abe30c8b8777 Mon Sep 17 00:00:00 2001 From: Krzysztof Parzyszek Date: Mon, 13 Apr 2015 17:16:45 +0000 Subject: Allow memory intrinsics to be tail calls llvm-svn: 234764 --- llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll | 31 ++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll (limited to 'llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll') diff --git a/llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll b/llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll new file mode 100644 index 00000000000..78c84c47d49 --- /dev/null +++ b/llvm/test/CodeGen/X86/tailcall-mem-intrinsics.ll @@ -0,0 +1,31 @@ +; RUN: llc -march=x86 < %s | FileCheck %s + +; CHECK-LABEL: tail_memcpy +; CHECK: jmp memcpy +define void @tail_memcpy(i8* nocapture %p, i8* nocapture readonly %q, i32 %n) #0 { +entry: + tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* %q, i32 %n, i32 1, i1 false) + ret void +} + +; CHECK-LABEL: tail_memset +; CHECK; jmp memmove +define void @tail_memmove(i8* nocapture %p, i8* nocapture readonly %q, i32 %n) #0 { +entry: + tail call void @llvm.memmove.p0i8.p0i8.i32(i8* %p, i8* %q, i32 %n, i32 1, i1 false) + ret void +} + +; CHECK-LABEL: tail_memset +; CHECK: jmp memset +define void @tail_memset(i8* nocapture %p, i8 %c, i32 %n) #0 { +entry: + tail call void @llvm.memset.p0i8.i32(i8* %p, i8 %c, i32 %n, i32 1, i1 false) + ret void +} + +declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) #0 +declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) #0 +declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) #0 + +attributes #0 = { nounwind } -- cgit v1.2.3