Changes in directory llvm/lib/CodeGen:
IfConversion.cpp updated: 1.58 -> 1.59
---
Log message:
Avoid if-converting simple block that ends with unconditional branch or
fallthrough unless it branches / falls to the 'false' block. Not profitable,
may end up increasing code size.
---
Diffs of the changes: (+4 -1)
IfConversion.cpp | 5 ++++-
1 files changed, 4 insertions(+), 1 deletion(-)
Index: llvm/lib/CodeGen/IfConversion.cpp
diff -u llvm/lib/CodeGen/IfConversion.cpp:1.58
llvm/lib/CodeGen/IfConversion.cpp:1.59
--- llvm/lib/CodeGen/IfConversion.cpp:1.58 Mon Jun 18 20:26:12 2007
+++ llvm/lib/CodeGen/IfConversion.cpp Tue Jun 19 16:45:13 2007
@@ -399,6 +399,9 @@
if (TrueBBI.IsBeingAnalyzed || TrueBBI.IsDone)
return false;
+ if (TrueBBI.IsBrAnalyzable)
+ return false;
+
if (TrueBBI.BB->pred_size() > 1) {
if (TrueBBI.CannotBeCopied ||
TrueBBI.NonPredSize > TLI->getIfCvtDupBlockSizeLimit())
@@ -406,7 +409,7 @@
Dups = TrueBBI.NonPredSize;
}
- return !blockAlwaysFallThrough(TrueBBI) && TrueBBI.BrCond.size() == 0;
+ return true;
}
/// ValidTriangle - Returns true if the 'true' and 'false' blocks (along
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