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# c7472d91 08-Mar-2017 Tim Shen <[email protected]>

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

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

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Revision tags: llvmorg-4.0.0, llvmorg-4.0.0-rc4
# db8425ef 02-Mar-2017 Nemanja Ivanovic <[email protected]>

[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 im

[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

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