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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2018-10-19 17:40:57 +0200 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2018-10-19 17:40:57 +0200 |
| commit | 273f3d4bb4734845ce527bf92b4781e288e4aae2 (patch) | |
| tree | 2f34e9f382748104399c2b3637da4cf1ad9add2a /gcc/omp-low.c | |
| parent | cba40f681af46fc114b1c98fcf0a259407410dc7 (diff) | |
| download | gcc-273f3d4bb4734845ce527bf92b4781e288e4aae2.zip gcc-273f3d4bb4734845ce527bf92b4781e288e4aae2.tar.gz gcc-273f3d4bb4734845ce527bf92b4781e288e4aae2.tar.bz2 | |
rs6000: Put CR0 first in REG_ALLOC_ORDER
IRA and LRA prefer to use CR7 (which is first in REG_ALLOC_ORDER) over
CR0, although the latter often is cheaper ("x" vs. "y" constraints).
We should figure out why this is and fix it; but until that is done,
this patch makes CR0 the first allocated register: it improves the
current code, and it is required for later patches to be effective.
(It changes two testcases to no longer look at what CR field is
allocated).
* config/rs6000/rs6000.h (REG_ALLOC_ORDER): Move 68 (that is, CR0) to
be the first CR field allocated.
gcc/testsuite/
* gcc.target/powerpc/safe-indirect-jump-2.c: Do not check assigned CR
field number.
* gcc.target/powerpc/safe-indirect-jump-3.c: Ditto.
From-SVN: r265318
Diffstat (limited to 'gcc/omp-low.c')
0 files changed, 0 insertions, 0 deletions