rs6000.c
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rs6000: Improve comparison rtx_cost (PR81288) · b8adcbd9The current rs6000 rtx_cost for comparisons against 0 is very high if TARGET_ISEL && !TARGET_MFCRF, much higher than for reg-reg comparisons, much higher than a load of 0 and such a reg-reg-comparison. This leads to infinite recursion in CSE (see PR81288). This patch removes the too-high cost, also simplifying this code. PR 81288/target * config/rs6000/rs6000.c (rs6000_rtx_costs): Do not handle TARGET_ISEL && !TARGET_MFCRF differently. Simplify code. From-SVN: r255188
Segher Boessenkool committed