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[LLVMdev] Double spills with Greedy regalloc
2012 Jan 27
2
[LLVMdev] Double spills with Greedy regalloc
...mem:ST2[FixedStack13](align=1) STDWPtrQRr <fi#13>, 0, %R23R22; mem:ST2[FixedStack13](align=1) STDWPtrQRr <fi#14>, 0, %R21R20; mem:ST2[FixedStack14](align=1) STDWPtrQRr <fi#14>, 0, %R21R20; mem:ST2[FixedStack14](align=1) STDWPtrQRr <fi#15>, 0, %R19R18; mem:ST2[FixedStack15](align=1) STDWPtrQRr <fi#15>, 0, %R19R18; mem:ST2[FixedStack15](align=1) Each STDWPtrQRr is a spill instruction, but notice that it's spilling everything twice to each frame index. I'm only getting this with the Greedy regalloc, PBQP will not duplicate the spills. Is there someth...
[LLVMdev] Double spills with Greedy regalloc
2012 Jan 27
0
[LLVMdev] Double spills with Greedy regalloc
...](align=1) > STDWPtrQRr <fi#13>, 0, %R23R22; mem:ST2[FixedStack13](align=1) > STDWPtrQRr <fi#14>, 0, %R21R20; mem:ST2[FixedStack14](align=1) > STDWPtrQRr <fi#14>, 0, %R21R20; mem:ST2[FixedStack14](align=1) > STDWPtrQRr <fi#15>, 0, %R19R18; mem:ST2[FixedStack15](align=1) > STDWPtrQRr <fi#15>, 0, %R19R18; mem:ST2[FixedStack15](align=1) > > Each STDWPtrQRr is a spill instruction, but notice that it's spilling everything twice to each frame index. I'm only getting this with the Greedy regalloc, PBQP will not duplicate the spills....