Merging r196046:
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r196046 | tnorthover | 2013-12-01 06:16:24 -0800 (Sun, 01 Dec 2013) | 8 lines
ARM: fix bug in -Oz stack adjustment folding
Previously, we clobbered callee-saved registers when folding an "add
sp, #N" into a "pop {rD, ...}" instruction. This change checks whether
a register we're going to add to the "pop" could actually be live
outside the function before doing so and should fix the issue.
This should fix PR18081.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@196074
91177308-0d34-0410-b5e6-
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projects / llvm / commit