[llvm-commits] [llvm] r111947 - in /llvm/trunk: lib/Target/X86/AsmParser/X86AsmParser.cpp test/MC/AsmParser/X86/x86_instructions.s

[Daniel Dunbar]

Author: ddunbar
Date: Tue Aug 24 14:24:18 2010
New Revision: 111947

URL: http://llvm.org/viewvc/llvm-project?rev=111947&view=rev
Log:
MC/X86: Add custom hack for recognizing "imul $12, %eax" and friends.

Modified:
    llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp
    llvm/trunk/test/MC/AsmParser/X86/x86_instructions.s

Modified: llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp?rev=111947&r1=111946&r2=111947&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp (original)
+++ llvm/trunk/lib/Target/X86/AsmParser/X86AsmParser.cpp Tue Aug 24 14:24:18 2010
@@ -826,6 +826,14 @@
     Operands.erase(Operands.begin() + 2);
   }
 
+  // FIXME: Hack to handle "imul A, B" which is an alias for "imul A, B, B".
+  if (Name.startswith("imul") && Operands.size() == 3 &&
+      static_cast<X86Operand*>(Operands.back())->isReg()) {
+    X86Operand *Op = static_cast<X86Operand*>(Operands.back());
+    Operands.push_back(X86Operand::CreateReg(Op->getReg(), Op->getStartLoc(),
+                                             Op->getEndLoc()));
+  }
+
   return false;
 }
 

Modified: llvm/trunk/test/MC/AsmParser/X86/x86_instructions.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/AsmParser/X86/x86_instructions.s?rev=111947&r1=111946&r2=111947&view=diff
==============================================================================
--- llvm/trunk/test/MC/AsmParser/X86/x86_instructions.s (original)
+++ llvm/trunk/test/MC/AsmParser/X86/x86_instructions.s Tue Aug 24 14:24:18 2010
@@ -158,3 +158,6 @@
 // CHECK: movaps	%xmm3, (%esi)
 // CHECK-STDERR: warning: scale factor without index register is ignored
 movaps %xmm3, (%esi, 2)
+
+// CHECK: imull $12, %eax, %eax
+imul $12, %eax