Changes in directory llvm/lib/Target:
TargetLowering.cpp updated: 1.35 -> 1.36
---
Log message:
Don't return registers from register classes that aren't legal.
---
Diffs of the changes: (+15 -2)
TargetLowering.cpp | 17 +++++++++++++++--
1 files changed, 15 insertions(+), 2 deletions(-)
Index: llvm/lib/Target/TargetLowering.cpp
diff -u llvm/lib/Target/TargetLowering.cpp:1.35
llvm/lib/Target/TargetLowering.cpp:1.36
--- llvm/lib/Target/TargetLowering.cpp:1.35 Tue Feb 21 18:56:38 2006
+++ llvm/lib/Target/TargetLowering.cpp Wed Feb 22 17:00:51 2006
@@ -766,11 +766,24 @@
for (MRegisterInfo::regclass_iterator RCI = RI->regclass_begin(),
E = RI->regclass_end(); RCI != E; ++RCI) {
const TargetRegisterClass *RC = *RCI;
+
+ // If none of the the value types for this register class are valid, we
+ // can't use it. For example, 64-bit reg classes on 32-bit targets.
+ bool isLegal = false;
+ for (TargetRegisterClass::vt_iterator I = RC->vt_begin(), E = RC->vt_end();
+ I != E; ++I) {
+ if (isTypeLegal(*I)) {
+ isLegal = true;
+ break;
+ }
+ }
+
+ if (!isLegal) continue;
+
for (TargetRegisterClass::iterator I = RC->begin(), E = RC->end();
I != E; ++I) {
- if (StringsEqualNoCase(RegName, RI->get(*I).Name)) {
+ if (StringsEqualNoCase(RegName, RI->get(*I).Name))
return std::make_pair(*I, RC);
- }
}
}
_______________________________________________
llvm-commits mailing list
llvm-commits@cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
