diff options
| author | Oleg Endo <olegendo@gcc.gnu.org> | 2012-07-30 06:46:36 +0000 |
|---|---|---|
| committer | Oleg Endo <olegendo@gcc.gnu.org> | 2012-07-30 06:46:36 +0000 |
| commit | be8cbce15811f4d5ba02d7f3d8784b7b94b421d1 (patch) | |
| tree | 9cea2b0f80a42a70613848e3f11ac4a857ab77d4 /gcc/testsuite | |
| parent | be82afe609f07d51a1d57fecbd1daf1882528f4c (diff) | |
| download | gcc-be8cbce15811f4d5ba02d7f3d8784b7b94b421d1.zip gcc-be8cbce15811f4d5ba02d7f3d8784b7b94b421d1.tar.gz gcc-be8cbce15811f4d5ba02d7f3d8784b7b94b421d1.tar.bz2 | |
re PR target/51244 ([SH] Inefficient conditional branch and code around T bit)
PR target/51244
* config/sh/sh.md (mov_neg_si_t): Move to Scc instructions section.
Use t_reg_operand predicate. Add split for negated case.
(ashrsi2_31): Pass get_t_reg_rtx to gen_mov_neg_si_t.
* config/sh/sh.c (expand_ashiftrt): Likewise.
PR target/51244
* gcc.target/sh/pr51244-4.c: New.
From-SVN: r189953
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/sh/pr51244-4.c | 19 |
2 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c318d45..74af965 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2012-07-30 Oleg Endo <olegendo@gcc.gnu.org> + + PR target/51244 + * gcc.target/sh/pr51244-4.c: New. + 2012-07-27 Uros Bizjak <ubizjak@gmail.com> * gfortran.dg/bind_c_array_params_2.f90: Add "-mno-explicit-relocs" diff --git a/gcc/testsuite/gcc.target/sh/pr51244-4.c b/gcc/testsuite/gcc.target/sh/pr51244-4.c new file mode 100644 index 0000000..f307378 --- /dev/null +++ b/gcc/testsuite/gcc.target/sh/pr51244-4.c @@ -0,0 +1,19 @@ +/* Check that storing the (negated) T bit as all ones or zeros in a reg + uses the subc instruction. On SH2A a sequence with the movrt instruction + is also OK instead of subc. */ +/* { dg-do compile { target "sh*-*-*" } } */ +/* { dg-options "-O1 -mbranch-cost=2" } */ +/* { dg-skip-if "" { "sh*-*-*" } { "-m5*"} { "" } } */ +/* { dg-final { scan-assembler-not "movt|tst|negc" } } */ +/* { dg-final { scan-assembler "subc|movrt|neg|not" } } */ + +int test_00 (int x, int y) +{ + return x != y ? -1 : 0; +} + +int test_01 (int x, int y) +{ + return x == y ? -1 : 0; +} + |