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| author | Richard Biener <rguenther@suse.de> | 2022-03-08 12:07:07 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2022-03-08 15:57:50 +0100 |
| commit | 058d19b42ad4c4c22635f70db6913a80884aedec (patch) | |
| tree | 132a35c433f10840e076458499896e86ef4bc9ca /gcc/doc | |
| parent | 7cce7b1c3d829172eb7f232e71ad194a0ad51931 (diff) | |
| download | gcc-058d19b42ad4c4c22635f70db6913a80884aedec.zip gcc-058d19b42ad4c4c22635f70db6913a80884aedec.tar.gz gcc-058d19b42ad4c4c22635f70db6913a80884aedec.tar.bz2 | |
tree-optimization/84201 - add --param vect-induction-float
This adds a --param to allow disabling of vectorization of
floating point inductions. Ontop of -Ofast this should allow
549.fotonik3d_r to not miscompare.
2022-03-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/84201
* params.opt (-param=vect-induction-float): Add.
* doc/invoke.texi (vect-induction-float): Document.
* tree-vect-loop.cc (vectorizable_induction): Honor
param_vect_induction_float.
* gcc.dg/vect/pr84201.c: New testcase.
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index b01ffab..a0fa5e1 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -14989,6 +14989,9 @@ in an inner loop relative to the loop being vectorized. The factor applied is the maximum of the estimated number of iterations of the inner loop and this parameter. The default value of this parameter is 50. +@item vect-induction-float +Enable loop vectorization of floating point inductions. + @item avoid-fma-max-bits Maximum number of bits for which we avoid creating FMAs. |