https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116994
Davide Italiano <dccitaliano at gmail dot com> changed:
What |Removed |Added
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CC| |lingling.kong7 at gmail dot com
--- Comment #2 from Davide Italiano <dccitaliano at gmail dot com> ---
This bisects to:
commit d826f7945609046f922732b138fb90795d5b1985
Author: konglin1 <[email protected]>
Date: Wed May 8 15:46:10 2024 +0800
x86: Fix cmov cost model issue [PR109549]
(if_then_else:SI (eq (reg:CCZ 17 flags)
(const_int 0 [0]))
(reg/v:SI 101 [ e ])
(reg:SI 102))
The cost is 8 for the rtx, the cost for
(eq (reg:CCZ 17 flags) (const_int 0 [0])) is 4,
but this is just an operator do not need to compute it's cost in cmov.
gcc/ChangeLog:
PR target/109549
* config/i386/i386.cc (ix86_rtx_costs): The XEXP (x, 0) for cmov
is an operator do not need to compute cost.
gcc/testsuite/ChangeLog:
* gcc.target/i386/cmov6.c: Fixed.
gcc/config/i386/i386.cc | 2 +-
gcc/testsuite/gcc.target/i386/cmov6.c | 5 +----
2 files changed, 2 insertions(+), 5 deletions(-)
