diff options
| author | Andreas Schwab <schwab@suse.de> | 2014-06-18 10:37:14 +0000 |
|---|---|---|
| committer | Andreas Schwab <schwab@gcc.gnu.org> | 2014-06-18 10:37:14 +0000 |
| commit | a0f37b26c5b459cc601ad226a6e4a13b45f5e454 (patch) | |
| tree | 7d9cbd498f3d157c295b5573cf648b71a8134c51 /gcc/testsuite/gcc.target/m68k | |
| parent | 9fdb837f67dfa03da55cc5a9e51fa492c2a72f3b (diff) | |
Use strict_low_part for loading a constant only if it is cheaper
PR rtl-optimization/54555
* postreload.c (move2add_use_add2_insn): Substitute
STRICT_LOW_PART only if it is cheaper.
testsuite/:
PR rtl-optimization/54555
* gcc.target/m68k/pr54555.c: New test.
From-SVN: r211777
Diffstat (limited to 'gcc/testsuite/gcc.target/m68k')
| -rw-r--r-- | gcc/testsuite/gcc.target/m68k/pr54555.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/m68k/pr54555.c b/gcc/testsuite/gcc.target/m68k/pr54555.c new file mode 100644 index 00000000000..4be704b8f77 --- /dev/null +++ b/gcc/testsuite/gcc.target/m68k/pr54555.c @@ -0,0 +1,13 @@ +/* PR rtl-optimization/54555 + Test that postreload does not shorten the load of small constants to + use move.b instead of moveq. */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ +/* { dg-final { scan-assembler-not "move\\.?b" } } */ + +void foo (void); +void bar (int a) +{ + if (a == 16 || a == 23) foo (); + if (a == -110 || a == -128) foo (); +} |