projects / platform / upstream / llvm.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: fc6ffed) | patch
[AVX-512] Punt on fast-isel of truncates to i1 when AVX512 is enabled.
authorCraig Topper <craig.topper@gmail.com>
Tue, 28 Mar 2017 23:20:37 +0000 (23:20 +0000)
committerCraig Topper <craig.topper@gmail.com>
Tue, 28 Mar 2017 23:20:37 +0000 (23:20 +0000)
commit331297c62e028190c8e7c4053d9a7d434875c3e6
tree8225f77b9fe903caaf2f51e40d1344d2fe58ef21tree | snapshot
parentfc6ffede655b55099550b96604add2d1eb7877b0commit | diff
[AVX-512] Punt on fast-isel of truncates to i1 when AVX512 is enabled.

We should be masking the value and emitting a register copy like we do in non-fast isel. Instead we were just updating the value map and emitting nothing.

After r298928 we started seeing cases where we would create a copy from GR8 to GR32 because the source register in a VK1 to GR32 copy was replaced by the GR8 going into a truncate.

This fixes PR32451.

llvm-svn: 298957
llvm/lib/Target/X86/X86FastISel.cpp diff | blob | history
Domain: System / Toolchain;