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| author | Duncan Sands <baldrick@free.fr> | 2011-10-27 19:16:21 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2011-10-27 19:16:21 +0000 |
| commit | 32a43cc0fc3cd42702d7859eaa58dd42f561a54d (patch) | |
| tree | 56449a56539910bed314212d85f556a4d59768c0 /test/Transforms/InstSimplify/2011-10-27-BinOpCrash.ll | |
| parent | 6eb1ed8c9c6a6d3f9b57900c44fc076d08a358bd (diff) | |
| download | llvm-32a43cc0fc3cd42702d7859eaa58dd42f561a54d.tar.gz llvm-32a43cc0fc3cd42702d7859eaa58dd42f561a54d.tar.bz2 llvm-32a43cc0fc3cd42702d7859eaa58dd42f561a54d.tar.xz | |
Reapply commit 143028 with a fix: the problem was casting a ConstantExpr Mul
using BinaryOperator (which only works for instructions) when it should have
been a cast to OverflowingBinaryOperator (which also works for constants).
While there, correct a few other dubious looking uses of BinaryOperator.
Thanks to Chad Rosier for the testcase. Original commit message:
My super-optimizer noticed that we weren't folding this expression to
true: (x *nsw x) sgt 0, where x = (y | 1). This occurs in 464.h264ref.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143125 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstSimplify/2011-10-27-BinOpCrash.ll')
| -rw-r--r-- | test/Transforms/InstSimplify/2011-10-27-BinOpCrash.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/2011-10-27-BinOpCrash.ll b/test/Transforms/InstSimplify/2011-10-27-BinOpCrash.ll new file mode 100644 index 0000000000..a10081a42d --- /dev/null +++ b/test/Transforms/InstSimplify/2011-10-27-BinOpCrash.ll @@ -0,0 +1,12 @@ +; RUN: opt < %s -instcombine + +@_ZN11xercesc_2_5L11gDigitCharsE = external constant [32 x i16], align 2 +@_ZN11xercesc_2_5L10gBaseCharsE = external constant [354 x i16], align 2 +@_ZN11xercesc_2_5L17gIdeographicCharsE = external constant [7 x i16], align 2 +@_ZN11xercesc_2_5L15gCombiningCharsE = external constant [163 x i16], align 2 + +define i32 @_ZN11xercesc_2_515XMLRangeFactory11buildRangesEv(i32 %x) { + %a = add i32 %x, add (i32 add (i32 ashr (i32 add (i32 mul (i32 ptrtoint ([32 x i16]* @_ZN11xercesc_2_5L11gDigitCharsE to i32), i32 -1), i32 ptrtoint (i16* getelementptr inbounds ([32 x i16]* @_ZN11xercesc_2_5L11gDigitCharsE, i32 0, i32 30) to i32)), i32 1), i32 ashr (i32 add (i32 mul (i32 ptrtoint ([7 x i16]* @_ZN11xercesc_2_5L17gIdeographicCharsE to i32), i32 -1), i32 ptrtoint (i16* getelementptr inbounds ([7 x i16]* @_ZN11xercesc_2_5L17gIdeographicCharsE, i32 0, i32 4) to i32)), i32 1)), i32 8) + %b = add i32 %a, %x + ret i32 %b +} |