search for: 7768b

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Strange regalloc behaviour: one more available register causes much worse allocation
2018 Dec 05
2
Strange regalloc behaviour: one more available register causes much worse allocation
...r64 = COPY %397:gpr64 7424B %394:gpr32 = COPY %392:gpr32 7528B %253:gpr32 = MOVi32imm 28 7536B STRWui %253:gpr32, %182:gpr64common, 2 :: (store 4 into %ir.106, align 8) 7752B %392:gpr32 = COPY %394:gpr32 7756B %397:gpr64 = COPY %399:gpr64 7764B %402:gpr32 = COPY %404:gpr32 7768B %407:gpr32 = COPY %409:gpr32 7776B %412:gpr32 = COPY %414:gpr32 7780B %417:gpr32 = COPY %419:gpr32 7788B %422:gpr32 = COPY %424:gpr32 7792B %427:gpr32 = COPY %429:gpr32 7800B %432:gpr64 = COPY %434:gpr64 7808B %373:gpr64sp = IMPLICIT_DEF 7816B %374:gpr64sp = IMPLICIT_D...
Strange regalloc behaviour: one more available register causes much worse allocation
2018 Dec 05
3
Strange regalloc behaviour: one more available register causes much worse allocation
...r64 = COPY %397:gpr64 7424B %394:gpr32 = COPY %392:gpr32 7528B %253:gpr32 = MOVi32imm 28 7536B STRWui %253:gpr32, %182:gpr64common, 2 :: (store 4 into %ir.106, align 8) 7752B %392:gpr32 = COPY %394:gpr32 7756B %397:gpr64 = COPY %399:gpr64 7764B %402:gpr32 = COPY %404:gpr32 7768B %407:gpr32 = COPY %409:gpr32 7776B %412:gpr32 = COPY %414:gpr32 7780B %417:gpr32 = COPY %419:gpr32 7788B %422:gpr32 = COPY %424:gpr32 7792B %427:gpr32 = COPY %429:gpr32 7800B %432:gpr64 = COPY %434:gpr64 7808B %373:gpr64sp = IMPLICIT_DEF 7816B %374:gpr64sp = IMPLICIT_D...