Displaying 1 result from an estimated 1 matches for "pr10884".
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pr10584
2012 Oct 22
3
[LLVMdev] x86 Frame Pointer with AVX
Hey guys,
I found a performance regression in the X86 backend related to PR10884.
In trunk, the frame pointer is always set up when an AVX register is used
in a function. This is done in case 32-byte spill code is later introduced
into the function and hence dynamic stack realignment is needed. Needless
to say, it's a big hammer. This regression seems particularly painful...