hanchenye-llvm-project

Commit Graph

Author	SHA1	Message	Date
Sanjay Patel	a932da8f35	Fix for PR17073 ( http://llvm.org/pr17073 ), simplifycfg illegally hoists an operation in a phi node that can trap. This patch adds to an existing loop over phi nodes in SimplifyCondBranchToCondBranch() to check for trapping ops and bails out of the optimization if we find one of those. The test cases verify that trapping ops are not hoisted and non-trapping ops are still optimized as expected. llvm-svn: 212490	2014-07-07 21:19:00 +00:00

Author

SHA1

Message

Date

Sanjay Patel

a932da8f35

Fix for PR17073 ( http://llvm.org/pr17073 ), simplifycfg illegally hoists an operation in a phi node that can trap.

This patch adds to an existing loop over phi nodes in SimplifyCondBranchToCondBranch() to check for trapping ops and bails out of the optimization if we find one of those.

The test cases verify that trapping ops are not hoisted and non-trapping ops are still optimized as expected.

llvm-svn: 212490

2014-07-07 21:19:00 +00:00

1 Commits