[llvm-commits] CVS: llvm/test/Regression/Transforms/InstCombine/2004-02-23-ShiftShiftOverflow.ll
Chris Lattner
lattner at cs.uiuc.edu
Mon Feb 23 14:21:09 PST 2004
Changes in directory llvm/test/Regression/Transforms/InstCombine:
2004-02-23-ShiftShiftOverflow.ll added (r1.1)
---
Log message:
New testcase
---
Diffs of the changes: (+8 -0)
Index: llvm/test/Regression/Transforms/InstCombine/2004-02-23-ShiftShiftOverflow.ll
diff -c /dev/null llvm/test/Regression/Transforms/InstCombine/2004-02-23-ShiftShiftOverflow.ll:1.1
*** /dev/null Mon Feb 23 14:20:01 2004
--- llvm/test/Regression/Transforms/InstCombine/2004-02-23-ShiftShiftOverflow.ll Mon Feb 23 14:19:51 2004
***************
*** 0 ****
--- 1,8 ----
+ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 34
+
+ int %test(int %X) {
+ ; Do not fold into shr X, 34, as this uses undefined behavior!
+ %Y = shr int %X, ubyte 17
+ %Z = shr int %Y, ubyte 17
+ ret int %Z
+ }
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