From d88fc03602947b5baa35c8b09fe8bcfa2b4a03c1 Mon Sep 17 00:00:00 2001 From: Nate Begeman Date: Sat, 14 Jan 2006 03:14:10 +0000 Subject: bswap implementation git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25312 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/X86/bswap.ll | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 test/CodeGen/X86/bswap.ll (limited to 'test/CodeGen/X86/bswap.ll') diff --git a/test/CodeGen/X86/bswap.ll b/test/CodeGen/X86/bswap.ll new file mode 100644 index 0000000000..d48d26568c --- /dev/null +++ b/test/CodeGen/X86/bswap.ll @@ -0,0 +1,23 @@ +; bswap should be constant folded when it is passed a constant argument + +; RUN: llvm-as < %s | llc -march=x86 -enable-x86-dag-isel | grep bswapl | wc -l | grep 3 && +; RUN: llvm-as < %s | llc -march=x86 -enable-x86-dag-isel | grep rolw | wc -l | grep 1 + +declare ushort %llvm.bswap.i16(ushort) +declare uint %llvm.bswap.i32(uint) +declare ulong %llvm.bswap.i64(ulong) + +ushort %W(ushort %A) { + %Z = call ushort %llvm.bswap.i16(ushort %A) + ret ushort %Z +} + +uint %X(uint %A) { + %Z = call uint %llvm.bswap.i32(uint %A) + ret uint %Z +} + +ulong %Y(ulong %A) { + %Z = call ulong %llvm.bswap.i64(ulong %A) + ret ulong %Z +} -- cgit v1.2.3