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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2015-11-24 13:08:56 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2015-11-24 13:08:56 +0000 |
| commit | 714e1b3b4f22c4afd2891e956b5c05d7614ab0f9 (patch) | |
| tree | 9f39e12c374484b29285b9f51564dca909447dc0 /gcc/testsuite/gcc.target | |
| parent | 9211bbb2782fd934e697bcfd13f4547bfff8be37 (diff) | |
| download | gcc-714e1b3b4f22c4afd2891e956b5c05d7614ab0f9.zip gcc-714e1b3b4f22c4afd2891e956b5c05d7614ab0f9.tar.gz gcc-714e1b3b4f22c4afd2891e956b5c05d7614ab0f9.tar.bz2 | |
[AArch64][v2] Improve comparison with complex immediates followed by branch/cset
* config/aarch64/aarch64.md (*condjump): Rename to...
(condjump): ... This.
(*compare_condjump<mode>): New define_insn_and_split.
(*compare_cstore<mode>_insn): Likewise.
(*cstore<mode>_insn): Rename to...
(cstore<mode>_insn): ... This.
* config/aarch64/iterators.md (CMP): Handle ne code.
* config/aarch64/predicates.md (aarch64_imm24): New predicate.
* gcc.target/aarch64/cmpimm_branch_1.c: New test.
* gcc.target/aarch64/cmpimm_cset_1.c: Likewise.
From-SVN: r230805
Diffstat (limited to 'gcc/testsuite/gcc.target')
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/cmpimm_branch_1.c | 26 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/cmpimm_cset_1.c | 23 |
2 files changed, 49 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/aarch64/cmpimm_branch_1.c b/gcc/testsuite/gcc.target/aarch64/cmpimm_branch_1.c new file mode 100644 index 0000000..7ad736b --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/cmpimm_branch_1.c @@ -0,0 +1,26 @@ +/* { dg-do compile } */ +/* { dg-options "-save-temps -O2" } */ + +/* Test that we emit a sub+subs sequence rather than mov+movk+cmp. */ + +void g (void); +void +foo (int x) +{ + if (x != 0x123456) + g (); +} + +void +fool (long long x) +{ + if (x != 0x123456) + g (); +} + +/* { dg-final { scan-assembler-not "cmp\tw\[0-9\]*.*" } } */ +/* { dg-final { scan-assembler-not "cmp\tx\[0-9\]*.*" } } */ +/* { dg-final { scan-assembler-times "sub\tw\[0-9\]+.*" 1 } } */ +/* { dg-final { scan-assembler-times "sub\tx\[0-9\]+.*" 1 } } */ +/* { dg-final { scan-assembler-times "subs\tw\[0-9\]+.*" 1 } } */ +/* { dg-final { scan-assembler-times "subs\tx\[0-9\]+.*" 1 } } */ diff --git a/gcc/testsuite/gcc.target/aarch64/cmpimm_cset_1.c b/gcc/testsuite/gcc.target/aarch64/cmpimm_cset_1.c new file mode 100644 index 0000000..f6fd69f --- /dev/null +++ b/gcc/testsuite/gcc.target/aarch64/cmpimm_cset_1.c @@ -0,0 +1,23 @@ +/* { dg-do compile } */ +/* { dg-options "-save-temps -O2" } */ + +/* Test that we emit a sub+subs sequence rather than mov+movk+cmp. */ + +int +foo (int x) +{ + return x == 0x123456; +} + +long long +fool (long long x) +{ + return x == 0x123456; +} + +/* { dg-final { scan-assembler-not "cmp\tw\[0-9\]*.*" } } */ +/* { dg-final { scan-assembler-not "cmp\tx\[0-9\]*.*" } } */ +/* { dg-final { scan-assembler-times "sub\tw\[0-9\]+.*" 1 } } */ +/* { dg-final { scan-assembler-times "sub\tx\[0-9\]+.*" 1 } } */ +/* { dg-final { scan-assembler-times "subs\tw\[0-9\]+.*" 1 } } */ +/* { dg-final { scan-assembler-times "subs\tx\[0-9\]+.*" 1 } } */ |