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4345e14522
The intrinsics have an extra chunk of known bits logic compared to the normal cmp+select idiom. That allows folding the icmp in each case to something better, but that then opposes the canonical form of min/max that we try to form for a select. I'm carving out a narrow exception to preserve all existing regression tests while avoiding the inf-loop. It seems unlikely that this is the only bug like this left, but this should fix: https://llvm.org/PR51419 (cherry picked from commit b267d3ce8defa092600bda717ff18440d002f316) |
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