Cherrypick move optimization patch from upstream #34
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the untyped HSAIL regs. Instead of always representing the HSAIL's untyped registers as unsigned int, the gccbrig now pre-analyzes the BRIG code and builds the register variables as a type used the most when storing or reading data to/from each register. This reduces the total conversions which cannot be always optimized away. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254837 138bc75d-0d04-0410-961f-82ee72b054a4
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Cherrypick move optimization patch needed for hsacaffe for performance. I tried earlier to pull all changes from trunk-updates to pstl branch, but it broke directhsa (phsa finalizer hangs for a long time and is killed eventually).
The patch message:
[BRIGFE] Reduce the number of type conversions due tothe untyped HSAIL regs.
Instead of always representing the HSAIL's untyped registers as
unsigned int, the gccbrig now pre-analyzes the BRIG code and
builds the register variables as a type used the most when storing
or reading data to/from each register. This reduces the total
conversions which cannot be always optimized away.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254837 138bc75d-0d04-0410-961f-82ee72b054a4