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| author | YunQiang Su <syq@gcc.gnu.org> | 2024-06-28 16:11:35 +0800 |
|---|---|---|
| committer | YunQiang Su <syq@gcc.gnu.org> | 2024-07-05 15:52:38 +0800 |
| commit | f1437b96029d78e72bd987997f5303e29ebbb9f0 (patch) | |
| tree | cd31f1989938a55b473f7b1eb41ad00db0ef10f4 /gcc | |
| parent | 7eb8b65780d9dc3e266056383279b00d5e152bea (diff) | |
| download | gcc-f1437b96029d78e72bd987997f5303e29ebbb9f0.zip gcc-f1437b96029d78e72bd987997f5303e29ebbb9f0.tar.gz gcc-f1437b96029d78e72bd987997f5303e29ebbb9f0.tar.bz2 | |
MIPS/testsuite: Fix umips-save-restore-1.c
With some recent optimization, -O1/-O2/-O3 can archive almost same
performace/size by stack load/store. Thus lwm/swm will save/store
less callee-saved register. In fact only $16 is saved with swm.
To be sure that this optimization does exist, let's add 2 more
function calls. So that lwm/swm can be much more profitable.
If we add only once more, -O1 will still use stack load/store.
gcc/testsuite
* gcc.target/mips/umips-save-restore-1.c: Be sure lwm/swm
are used for more callee-saved registers with addtional
2 more function calls.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/gcc.target/mips/umips-save-restore-1.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/testsuite/gcc.target/mips/umips-save-restore-1.c b/gcc/testsuite/gcc.target/mips/umips-save-restore-1.c index ff1ea4b..0e2c4dc 100644 --- a/gcc/testsuite/gcc.target/mips/umips-save-restore-1.c +++ b/gcc/testsuite/gcc.target/mips/umips-save-restore-1.c @@ -7,12 +7,14 @@ int bar (int, int, int, int, int); MICROMIPS int foo (int n, int a, int b, int c, int d) { - int i, j; + int i, j, k, l; i = bar (n, a, b, c, d); j = bar (n, a, b, c, d); - return i + j; + k = bar (n, a, b, c, d); + l = bar (n, a, b, c, d); + return i + j + k + l; } -/* { dg-final { scan-assembler "\tswm\t\\\$16-\\\$2(0|1),\\\$31" } } */ -/* { dg-final { scan-assembler "\tlwm\t\\\$16-\\\$2(0|1),\\\$31" } } */ +/* { dg-final { scan-assembler "\tswm\t\\\$16-\\\$2(2|3),\\\$31" } } */ +/* { dg-final { scan-assembler "\tlwm\t\\\$16-\\\$2(2|3),\\\$31" } } */ |