diff options
| author | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2017-06-13 13:51:49 +0000 |
|---|---|---|
| committer | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2017-06-13 13:51:49 +0000 |
| commit | 2ba2a31ad4ec2eb67cd0cf9f7f581515f5514a46 (patch) | |
| tree | 317bcd656a1f92ab64dae77de9ef574e53707ec3 /lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp | |
| parent | 8475234d5e24860ad8e29c20410f82271c117b11 (diff) | |
[Hexagon] Stop pmpy recognition when shift conversion fails
The conversion of shifts from right shifts to left shifts may fail.
In such case, the pmpy recognition cannot proceed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305289 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp')
| -rw-r--r-- | lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp b/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp index b748b58bc0a..f82ad6cb3da 100644 --- a/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp +++ b/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp @@ -1744,7 +1744,8 @@ bool PolynomialMultiplyRecognize::recognize() { // wide as the target's pmpy instruction. if (!promoteTypes(LoopB, ExitB)) return false; - convertShiftsToLeft(LoopB, ExitB, IterCount); + if (!convertShiftsToLeft(LoopB, ExitB, IterCount)) + return false; cleanupLoopBody(LoopB); } |