[llvm-commits] [llvm] r67071 - in /llvm/trunk: lib/Target/X86/X86TargetAsmInfo.cpp test/CodeGen/X86/bswap-inline-asm.ll

[Dan Gohman]

Author: djg
Date: Mon Mar 16 21:17:27 2009
New Revision: 67071

URL: http://llvm.org/viewvc/llvm-project?rev=67071&view=rev
Log:
Recognize "bswapq" as an alternate spelling for the bswap instruction.

Added:
    llvm/trunk/test/CodeGen/X86/bswap-inline-asm.ll
Modified:
    llvm/trunk/lib/Target/X86/X86TargetAsmInfo.cpp

Modified: llvm/trunk/lib/Target/X86/X86TargetAsmInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86TargetAsmInfo.cpp?rev=67071&r1=67070&r2=67071&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86TargetAsmInfo.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86TargetAsmInfo.cpp Mon Mar 16 21:17:27 2009
@@ -411,8 +411,8 @@
 
     // 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);

Added: llvm/trunk/test/CodeGen/X86/bswap-inline-asm.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/bswap-inline-asm.ll?rev=67071&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/bswap-inline-asm.ll (added)
+++ llvm/trunk/test/CodeGen/X86/bswap-inline-asm.ll Mon Mar 16 21:17:27 2009
@@ -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
+}