[llvm-commits] CVS: llvm/lib/CodeGen/PrologEpilogInserter.cpp

[Evan Cheng]

Changes in directory llvm/lib/CodeGen:

PrologEpilogInserter.cpp updated: 1.66 -> 1.67
---
Log message:

Added a MRegisterInfo hook that tells PEI the target is responsible for
rounding the stack frame to a multiple of stack alignment.

---
Diffs of the changes:  (+3 -2)

 PrologEpilogInserter.cpp |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)


Index: llvm/lib/CodeGen/PrologEpilogInserter.cpp
diff -u llvm/lib/CodeGen/PrologEpilogInserter.cpp:1.66 llvm/lib/CodeGen/PrologEpilogInserter.cpp:1.67
--- llvm/lib/CodeGen/PrologEpilogInserter.cpp:1.66	Tue Jan 23 03:36:03 2007
+++ llvm/lib/CodeGen/PrologEpilogInserter.cpp	Thu Jan 25 16:12:41 2007
@@ -389,11 +389,12 @@
   // Round up the size to a multiple of the alignment, but only if there are
   // calls or alloca's in the function.  This ensures that any calls to
   // subroutines have their stack frames suitable aligned.
-  if (FFI->hasCalls() || FFI->hasVarSizedObjects()) {
+  const MRegisterInfo *RegInfo = Fn.getTarget().getRegisterInfo();
+  if (!RegInfo->targetHandlesStackFrameRounding() &&
+      (FFI->hasCalls() || FFI->hasVarSizedObjects())) {
     // When we have no frame pointer, we reserve argument space for call sites
     // in the function immediately on entry to the current function. This
     // eliminates the need for add/sub sp brackets around call sites.
-    const MRegisterInfo *RegInfo = Fn.getTarget().getRegisterInfo();
     if (!RegInfo->hasFP(Fn))
       Offset += FFI->getMaxCallFrameSize();