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(parent: 15715fb) | patch
[SystemZ] Implement isLegalAddressingMode()
authorRichard Sandiford <rsandifo@linux.vnet.ibm.com>
Wed, 31 Jul 2013 12:58:26 +0000 (12:58 +0000)
committerRichard Sandiford <rsandifo@linux.vnet.ibm.com>
Wed, 31 Jul 2013 12:58:26 +0000 (12:58 +0000)
commit04ded924f3583438c6633823eddb87761fa73cce
treeb79b516513939f4d5517ef0b1c7ef1ea222129eetree | snapshot
parent15715fb689a5c7a2476c943a7b06616bd6d67d5ecommit | diff
[SystemZ] Implement isLegalAddressingMode()

The loop optimizers were assuming that scales > 1 were OK.  I think this
is actually a bug in TargetLoweringBase::isLegalAddressingMode(),
since it seems to be trying to reject anything that isn't r+i or r+r,
but it has no default case for scales other than 0, 1 or 2.  Implementing
the hook for z means that z can no longer test any change there though.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187497 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/SystemZ/SystemZISelLowering.cpp diff | blob | history
lib/Target/SystemZ/SystemZISelLowering.h diff | blob | history
test/CodeGen/SystemZ/loop-01.ll [new file with mode: 0644] blob
C/C++ LLVM-based compilers that forbids OOTA behaviors