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| author | Kewen Lin <linkw@linux.ibm.com> | 2021-07-19 20:49:17 -0500 |
|---|---|---|
| committer | Kewen Lin <linkw@linux.ibm.com> | 2021-07-19 20:49:17 -0500 |
| commit | a1d27560770818c514ad1ad6683f89e1e1bcd0ec (patch) | |
| tree | 46cd1dff533809eb536b88b81536eefb0815624f /gcc/config.gcc | |
| parent | 21ea2f9320d31d3d925031a8ba189d9b19e52bc1 (diff) | |
| download | gcc-a1d27560770818c514ad1ad6683f89e1e1bcd0ec.zip gcc-a1d27560770818c514ad1ad6683f89e1e1bcd0ec.tar.gz gcc-a1d27560770818c514ad1ad6683f89e1e1bcd0ec.tar.bz2 | |
vect: Recog mul_highpart pattern [PR100696]
This patch is to extend the existing pattern mulhs handlings
to cover normal multiply highpart pattern recognization, it
introduces one new internal function IFN_MULH for 1:1 map to
[su]mul_highpart optab. Since it covers MULT_HIGHPART_EXPR
with optab support, i386 part change is to ensure it follows
the consistent costing path.
Bootstrapped & regtested on powerpc64le-linux-gnu P9,
x86_64-redhat-linux and aarch64-linux-gnu.
gcc/ChangeLog:
PR tree-optimization/100696
* internal-fn.c (first_commutative_argument): Add info for IFN_MULH.
* internal-fn.def (IFN_MULH): New internal function.
* tree-vect-patterns.c (vect_recog_mulhs_pattern): Add support to
recog normal multiply highpart as IFN_MULH.
* config/i386/i386.c (ix86_add_stmt_cost): Adjust for combined
function CFN_MULH.
gcc/testsuite/ChangeLog:
PR tree-optimization/100696
* gcc.target/i386/pr100637-3w.c: Adjust for mul_highpart recog.
Diffstat (limited to 'gcc/config.gcc')
0 files changed, 0 insertions, 0 deletions