llvm/include at dfe81adbcebb61d762d5c72771741dee7dcc1c4c - llvm

RPCSX/llvm

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History

David Majnemer dfe81adbce InstCombine: Don't miscompile (x lshr C1) udiv C2 We have a transform that changes: (x lshr C1) udiv C2 into: x udiv (C2 << C1) However, it is unsafe to do so if C2 << C1 discards any of C2's bits. This fixes PR21255. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219634 91177308-0d34-0410-b5e6-96231b3b80d8	2014-10-13 21:48:30 +00:00
..
llvm	InstCombine: Don't miscompile (x lshr C1) udiv C2	2014-10-13 21:48:30 +00:00
llvm-c	C API: Add LLVMCloneModule()	2014-10-01 17:14:57 +00:00

David Majnemer dfe81adbce InstCombine: Don't miscompile (x lshr C1) udiv C2

We have a transform that changes:
  (x lshr C1) udiv C2
into:
  x udiv (C2 << C1)

However, it is unsafe to do so if C2 << C1 discards any of C2's bits.

This fixes PR21255.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219634 91177308-0d34-0410-b5e6-96231b3b80d8

2014-10-13 21:48:30 +00:00

llvm

InstCombine: Don't miscompile (x lshr C1) udiv C2

2014-10-13 21:48:30 +00:00

llvm-c

C API: Add LLVMCloneModule()

2014-10-01 17:14:57 +00:00