[llvm-commits] [llvm] r49571 - in /llvm/trunk: lib/Target/X86/X86ISelLowering.cpp test/CodeGen/X86/byval2.ll

[Dan Gohman]

Author: djg
Date: Fri Apr 11 21:35:39 2008
New Revision: 49571

URL: http://llvm.org/viewvc/llvm-project?rev=49571&view=rev
Log:
Fix a bug that prevented x86-64 from using rep.movsq for
8-byte-aligned data.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
    llvm/trunk/test/CodeGen/X86/byval2.ll

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=49571&r1=49570&r2=49571&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Fri Apr 11 21:35:39 2008
@@ -4621,7 +4621,7 @@
         ValReg = X86::EAX;
         Val = (Val << 8)  | Val;
         Val = (Val << 16) | Val;
-        if (Subtarget->is64Bit() && ((Align & 0xF) == 0)) {  // QWORD aligned
+        if (Subtarget->is64Bit() && ((Align & 0x7) == 0)) {  // QWORD aligned
           AVT = MVT::i64;
           ValReg = X86::RAX;
           Val = (Val << 32) | Val;
@@ -4740,7 +4740,7 @@
       break;
     case 0:  // DWORD aligned
       AVT = MVT::i32;
-      if (Subtarget->is64Bit() && ((Align & 0xF) == 0))  // QWORD aligned
+      if (Subtarget->is64Bit() && ((Align & 0x7) == 0))  // QWORD aligned
         AVT = MVT::i64;
       break;
     default:  // Byte aligned

Modified: llvm/trunk/test/CodeGen/X86/byval2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/byval2.ll?rev=49571&r1=49570&r2=49571&view=diff

==============================================================================
--- llvm/trunk/test/CodeGen/X86/byval2.ll (original)
+++ llvm/trunk/test/CodeGen/X86/byval2.ll Fri Apr 11 21:35:39 2008
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | llc -march=x86-64 | grep rep.movsl | count 2
+; RUN: llvm-as < %s | llc -march=x86-64 | grep rep.movsq | count 2
 ; RUN: llvm-as < %s | llc -march=x86    | grep rep.movsl | count 2
 
 %struct.s = type { i64, i64, i64 }