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2 Commits

Author SHA1 Message Date
Hal Finkel
ec086bf087 [PowerPC] 'cc' should be an alias only to 'cr0' 
We had mistakenly believed that GCC's 'cc' referred to the entire
condition-code register (cr0 through cr7) -- and implemented this in r205630 to
fix PR19326, but 'cc' is actually an alias only to 'cr0'. This is causing LLVM
to clobber too much with legacy code with inline asm using the 'cc' clobber.

Fixes PR21451.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223328 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-04 00:46:20 +00:00
Hal Finkel
b12c642bbf [PowerPC] Add a full condition code register to make the "cc" clobber work 
gcc inline asm supports specifying "cc" as a clobber of all condition
registers. Add just enough modeling of the full register to make this work.
Fixed PR19326.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205630 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-04 15:15:57 +00:00