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authorDan Gohman <gohman@apple.com>2009-03-17 02:17:27 +0000
committerDan Gohman <gohman@apple.com>2009-03-17 02:17:27 +0000
commitd73566609ea050ab73e0a3cda1c3840fd1a3d8fb (patch)
treedd025b94952e654edc92ecfa9180f8e5d22befcc
parentc39b80fdfc606f5df118288f4fc6b5e9c0b5ee41 (diff)
Recognize "bswapq" as an alternate spelling for the bswap instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67071 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--lib/Target/X86/X86TargetAsmInfo.cpp4
-rw-r--r--test/CodeGen/X86/bswap-inline-asm.ll12
2 files changed, 14 insertions, 2 deletions
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index 226feb7c1e..f3faa7022c 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -411,8 +411,8 @@ bool X86TargetAsmInfo<BaseTAI>::ExpandInlineAsm(CallInst *CI) const {
// bswap $0
if (AsmPieces.size() == 2 &&
- AsmPieces[0] == "bswap" && (AsmPieces[1] == "$0" ||
- AsmPieces[1] == "${0:q}")) {
+ (AsmPieces[0] == "bswap" || AsmPieces[0] == "bswapq") &&
+ (AsmPieces[1] == "$0" || AsmPieces[1] == "${0:q}")) {
// No need to check constraints, nothing other than the equivalent of
// "=r,0" would be valid here.
return LowerToBSwap(CI);
diff --git a/test/CodeGen/X86/bswap-inline-asm.ll b/test/CodeGen/X86/bswap-inline-asm.ll
new file mode 100644
index 0000000000..c44d845c83
--- /dev/null
+++ b/test/CodeGen/X86/bswap-inline-asm.ll
@@ -0,0 +1,12 @@
+; RUN: llvm-as < %s | llc -march=x86-64 > %t
+; RUN: not grep APP %t
+; RUN: grep bswapq %t | count 2
+
+define i64 @foo(i64 %x) nounwind {
+ %asmtmp = tail call i64 asm "bswap $0", "=r,0,~{dirflag},~{fpsr},~{flags}"(i64 %x) nounwind
+ ret i64 %asmtmp
+}
+define i64 @bar(i64 %x) nounwind {
+ %asmtmp = tail call i64 asm "bswapq ${0:q}", "=r,0,~{dirflag},~{fpsr},~{flags}"(i64 %x) nounwind
+ ret i64 %asmtmp
+}