3 Commits

Author	SHA1	Message	Date
Qiu Chaofan	2866c6cad4	[NFC] [PowerPC] Narrow fast-math flags in tests ... A lot of tests under PowerPC are using fast flag, while fast is just alias of 7 fast-math flags. This change makes test points clearer. mc-instrlat.ll and sms-iterator.ll keeps unchanged since they are not testing fast-math behavior. (one for machine combiner crash, one for machine pipeliner bug) Reviewed By: steven.zhang, spatel Differential Revision: https://reviews.llvm.org/D78989	2020-05-13 17:22:45 +08:00
Qiu Chaofan	e9753822b5	[PowerPC] Respect SDNodeFlags in lowering SELECT_CC ... Legalizer should respect both command-line options or SDNode-level fast-math flags. Also, this patch propagates other flags during custom simplifying. Reviewed By: steven.zhang Differential Revision: https://reviews.llvm.org/D79074	2020-05-13 14:05:47 +08:00
Nemanja Ivanovic	25a41ad242	[PowerPC] Emit scalar fp min/max instructions ... VSX provides floating point minimum and maximum instructions that conform to IEEE semantics. This legalizes the respective nodes and emits VSX code for them. Furthermore, on Power9 cores we have xsmaxcdp and xsmincdp instructions that conform to language semantics for the conditional operator even in the presence of NaNs. Differential revision: https://reviews.llvm.org/D62993	2019-10-28 19:13:33 -05:00