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r275905 - in /trunk/gcc: ChangeLog config/i386/...
- From: hjl at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Wed, 18 Sep 2019 19:49:19 -0000
- Subject: r275905 - in /trunk/gcc: ChangeLog config/i386/...
Author: hjl
Date: Wed Sep 18 19:49:19 2019
New Revision: 275905
URL: https://gcc.gnu.org/viewcvs?rev=275905&root=gcc&view=rev
Log:
i386: Increase Skylake SImode pseudo register store cost
On Skylake, SImode store cost isn't less than half cost of 128-bit vector
store. This patch increases Skylake SImode pseudo register store cost to
make it the same as QImode and HImode.
gcc/
PR target/91446
* config/i386/x86-tune-costs.h (skylake_cost): Increase SImode
pseudo register store cost from 3 to 6 to make it the same as
QImode and HImode.
gcc/testsuite/
PR target/91446
* gcc.target/i386/pr91446.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr91446.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/x86-tune-costs.h
trunk/gcc/testsuite/ChangeLog