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3 Commits

Author SHA1 Message Date
Tim Shen
cb40c6d037 Revert "Revert "[PowerPC][ELFv2ABI] Allocate parameter area on-demand to reduce stack frame size"" 
After inspection, it's an UB in our code base. Someone cast a var-arg
function pointer to a non-var-arg one. :/

Re-commit r296771 to continue testing on the patch.

Sorry for the trouble!

llvm-svn: 297256
 2017-03-08 02:41:35 +00:00
Tim Shen
55d0992071 Revert "[PowerPC][ELFv2ABI] Allocate parameter area on-demand to reduce stack frame size" 
This reverts commit r296771.

We found some wide spread test failures internally. I'm working on a
testcase. Politely revert the patch in the mean time. :)

llvm-svn: 297124
 2017-03-07 07:40:10 +00:00
Nemanja Ivanovic
336ee825a8 [PowerPC][ELFv2ABI] Allocate parameter area on-demand to reduce stack frame size 
This patch reduces the stack frame size by not allocating the parameter area if
it is not required. In the current implementation LowerFormalArguments_64SVR4
already handles the parameter area, but LowerCall_64SVR4 does not
(when calculating the stack frame size). What this patch does is make
LowerCall_64SVR4 consistent with LowerFormalArguments_64SVR4.

Committing on behalf of Hiroshi Inoue.

Differential Revision: https://reviews.llvm.org/D29881

llvm-svn: 296771
 2017-03-02 17:38:59 +00:00