Changes in directory llvm/lib/Target/PowerPC:
README.txt updated: 1.50 -> 1.51
---
Log message:
another testcase.
---
Diffs of the changes: (+17 -0)
README.txt | 17 +++++++++++++++++
1 files changed, 17 insertions(+)
Index: llvm/lib/Target/PowerPC/README.txt
diff -u llvm/lib/Target/PowerPC/README.txt:1.50
llvm/lib/Target/PowerPC/README.txt:1.51
--- llvm/lib/Target/PowerPC/README.txt:1.50 Tue Jan 31 01:16:34 2006
+++ llvm/lib/Target/PowerPC/README.txt Tue Jan 31 18:28:12 2006
@@ -460,3 +460,20 @@
This could be done in the dag combiner, by swapping a BR_CC when a SETCC of the
same operands (but backwards) exists. In this case, this wouldn't save us
anything though, because the compares still wouldn't be shared.
+
+===-------------------------------------------------------------------------===
+
+A simple case we generate suboptimal code on:
+
+int test(int X) {
+ return X == 0 ? 32 : 0;
+}
+
+_test:
+ cntlzw r2, r3
+ srwi r2, r2, 5
+ slwi r3, r2, 5
+ blr
+
+The shifts should be one 'andi'.
+
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