commit b38c2ec89c3191f8127d6484be303b42fce28507
author Devang Patel <dpatel@apple.com> Sat Mar 17 00:13:28 2007 +0000
committer Devang Patel <dpatel@apple.com> Sat Mar 17 00:13:28 2007 +0000
tree 3ee834812ebbe96f8b8ef53981ee567db04184d8
parent 25d4052af6730548088280d1b320b6c4113fc851

Support 'I' inline asm constraint.

llvm-svn: 35129

llvm/lib/Target/X86/X86ISelLowering.cpp

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 9874c25..c8a2e2e 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -4523,6 +4523,17 @@
 isOperandValidForConstraint(SDOperand Op, char Constraint, SelectionDAG &DAG) {
   switch (Constraint) {
   default: break;
+  case 'I':
+    if (isa<ConstantSDNode>(Op)) {
+      unsigned Value = cast<ConstantSDNode>(Op)->getValue();
+      if (Value >= 0 && Value <= 31)
+        return Op;
+      else 
+        return SDOperand(0,0);
+    } else {
+        return SDOperand(0,0);
+    }
+    break;
   case 'i':
     // Literal immediates are always ok.
     if (isa<ConstantSDNode>(Op)) return Op;