[llvm-commits] CVS: llvm/lib/Target/X86/InstSelectSimple.cpp

[Chris Lattner]

Changes in directory llvm/lib/Target/X86:

InstSelectSimple.cpp updated: 1.250 -> 1.251

---
Log message:

Pass boolean constants into function calls more efficiently, generating:

        mov DWORD PTR [%ESP + 4], 1

instead of:

        mov %EAX, 1
        mov DWORD PTR [%ESP + 4], %EAX



---
Diffs of the changes:  (+7 -1)

Index: llvm/lib/Target/X86/InstSelectSimple.cpp
diff -u llvm/lib/Target/X86/InstSelectSimple.cpp:1.250 llvm/lib/Target/X86/InstSelectSimple.cpp:1.251
--- llvm/lib/Target/X86/InstSelectSimple.cpp:1.250	Mon May 10 10:15:55 2004
+++ llvm/lib/Target/X86/InstSelectSimple.cpp	Wed May 12 11:35:04 2004
@@ -1207,7 +1207,7 @@
     // copy.
     if (ConstantInt *CI = dyn_cast<ConstantInt>(Val)) {
       int TheVal = CI->getRawValue() & 0xFFFFFFFF;
-    BuildMI(BB, X86::MOV32ri, 1, targetReg).addImm(TheVal);
+      BuildMI(BB, X86::MOV32ri, 1, targetReg).addImm(TheVal);
       return;
     }
   }
@@ -1405,6 +1405,12 @@
       unsigned ArgReg;
       switch (getClassB(Args[i].Ty)) {
       case cByte:
+        if (Args[i].Val && isa<ConstantBool>(Args[i].Val)) {
+          addRegOffset(BuildMI(BB, X86::MOV32mi, 5), X86::ESP, ArgOffset)
+            .addImm(Args[i].Val == ConstantBool::True);
+          break;
+        }
+        // FALL THROUGH
       case cShort:
         if (Args[i].Val && isa<ConstantInt>(Args[i].Val)) {
           // Zero/Sign extend constant, then stuff into memory.