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Author SHA1 Message Date
Sam Parker 13567dbbd8 [ARM] Allow signed icmps in ARMCodeGenPrepare 
Originally committed in r339755 which was reverted in r339806 due to
an asan issue. The issue was caused by my assumption that operands to
a CallInst mapped to the FunctionType Params. CallInsts are now
handled by iterating over their ArgOperands instead of Operands.
    
Original Message:
  Treat signed icmps as 'sinks', allowing them to be in the use-def
  tree, enabling more promotions to be performed. As a sink, any
  promoted incoming values need to be truncated before being used by
  the signed icmp.
    
  Differential Revision: https://reviews.llvm.org/D50067

llvm-svn: 339858
 2018-08-16 10:05:39 +00:00
Vitaly Buka ed4239f482 Revert "[ARM] Allow signed icmps in ARMCodeGenPrepare" 
use-after-poison in check-llvm under asan

This reverts commit r339755.

llvm-svn: 339806
 2018-08-15 20:09:35 +00:00
Sam Parker 6548cd3905 [ARM] Allow signed icmps in ARMCodeGenPrepare 
Treat signed icmps as 'sinks', allowing them to be in the use-def
tree, enabling more promotions to be performed. As a sink, any
promoted incoming values need to be truncated before being used by
the signed icmp.

Differential Revision: https://reviews.llvm.org/D50067

llvm-svn: 339755
 2018-08-15 08:23:03 +00:00