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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
Nemanja Ivanovic	92a8c36735	[DAGCombine] Optimize pow(X, 0.75) to sqrt(X) * sqrt(sqrt(X)) The sqrt case is faster and we already do this for the case where the exponent is 0.25. This adds the 0.75 case which is also not sensitive to signed zeros. Patch by Whitney Tsang (Whitney) Differential revision: https://reviews.llvm.org/D57434 llvm-svn: 353557	2019-02-08 19:50:58 +00:00

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

Nemanja Ivanovic

92a8c36735

[DAGCombine] Optimize pow(X, 0.75) to sqrt(X) * sqrt(sqrt(X))

The sqrt case is faster and we already do this for the case where
the exponent is 0.25. This adds the 0.75 case which is also not
sensitive to signed zeros.

Patch by Whitney Tsang (Whitney)

Differential revision: https://reviews.llvm.org/D57434

llvm-svn: 353557

2019-02-08 19:50:58 +00:00

2 Commits