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7 Commits

Author SHA1 Message Date
Jay Foad e737847b8f [SLC] Allow llvm.pow(x,2.0) -> x*x etc even if no pow() lib func 
optimizePow does not create any new calls to pow, so it should work
regardless of whether the pow library function is available. This allows
it to optimize the llvm.pow intrinsic on targets with no math library.

Based on a patch by Tim Renouf.

Differential Revision: https://reviews.llvm.org/D68231
 2020-05-04 10:54:07 +01:00
Sanjay Patel 5013a788f8 [InstCombine] adjust tests for pow(); NFC 
D68231 would change this, but the existing test
doesn't cover what was probably intended (a libcall test).
 2020-05-01 08:42:51 -04:00
Eric Christopher cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Evandro Menezes 5ecd6c1a46 [SLC] Expand simplification of pow() for vector types 
Also consider vector constants when simplifying `pow()`.

Differential revision: https://reviews.llvm.org/D50035

llvm-svn: 339578
 2018-08-13 16:12:37 +00:00
Sanjay Patel 3950095edf [InstCombine] add tests to show disabling of libcall/intrinsic shrinking; NFC 
llvm-svn: 339467
 2018-08-10 20:12:36 +00:00
Michael Kuperstein 4bb3f8f2e4 Adds missing TLI check for library simplification of 
* pow(x, 0.5) -> fabs(sqrt(x)) 
* pow(2.0, x) -> exp2(x)

llvm-svn: 188656
 2013-08-19 06:55:47 +00:00