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(parent: 00ec93d) | patch
ARM: Avoid dereferencing end() in ARMFrameLowering::emitPrologue
authorDuncan P. N. Exon Smith <dexonsmith@apple.com>
Wed, 17 Aug 2016 00:53:04 +0000 (00:53 +0000)
committerDuncan P. N. Exon Smith <dexonsmith@apple.com>
Wed, 17 Aug 2016 00:53:04 +0000 (00:53 +0000)
commitec083b59edf0cbf0855527c753d9053bcdba33da
tree560673c49c9910d65694ad91ffa22efbdab30f4dtree | snapshot
parent00ec93da2655a42195dd3864104bf335ed11c73fcommit | diff
ARM: Avoid dereferencing end() in ARMFrameLowering::emitPrologue

llvm::tryFoldSPUpdateIntoPushPop assumes its arguments are valid
MachineInstrs.  Update ARMFrameLowering::emitPrologue to respect that;
when LastPush==end(), it can't possibly be a push instruction anyway.

llvm-svn: 278880
llvm/lib/Target/ARM/ARMFrameLowering.cpp diff | blob | history
Domain: System / Toolchain;