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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2023-04-18 12:06:49 +0100 |
|---|---|---|
| committer | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2023-04-18 12:06:49 +0100 |
| commit | 2d70f3213fe4e76722cd55e48f8eb0820c56ec7a (patch) | |
| tree | ae6533de43e91c825f161294bc84ea63c9d593e4 /gcc | |
| parent | 4204ed2dc74390ab3689d1d6a53001761338baf6 (diff) | |
| download | gcc-2d70f3213fe4e76722cd55e48f8eb0820c56ec7a.zip gcc-2d70f3213fe4e76722cd55e48f8eb0820c56ec7a.tar.gz gcc-2d70f3213fe4e76722cd55e48f8eb0820c56ec7a.tar.bz2 | |
aarch64: Add QI -> HI zero-extension for LDAPR
This patch is a straightforward extension of the zero-extending LDAPR
pattern to represent QI -> HI load-extends. This maps down to a LDAPRB-W
instruction.
This lets us remove a redundant zero-extend in the new test function.
Bootstrapped and tested on aarch64-none-linux-gnu.
gcc/ChangeLog:
* config/aarch64/atomics.md
(*aarch64_atomic_load<ALLX:mode>_rcpc_zext):
Use SD_HSDI for destination mode iterator.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/ldapr-zext.c: Add test for u8 to u16
extension.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/aarch64/atomics.md | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/aarch64/ldapr-zext.c | 8 |
2 files changed, 11 insertions, 3 deletions
diff --git a/gcc/config/aarch64/atomics.md b/gcc/config/aarch64/atomics.md index 999f86e..2b6f04e 100644 --- a/gcc/config/aarch64/atomics.md +++ b/gcc/config/aarch64/atomics.md @@ -705,13 +705,13 @@ ) (define_insn "*aarch64_atomic_load<ALLX:mode>_rcpc_zext" - [(set (match_operand:GPI 0 "register_operand" "=r") - (zero_extend:GPI + [(set (match_operand:SD_HSDI 0 "register_operand" "=r") + (zero_extend:SD_HSDI (unspec_volatile:ALLX [(match_operand:ALLX 1 "aarch64_sync_memory_operand" "Q") (match_operand:SI 2 "const_int_operand")] ;; model UNSPECV_LDAP)))] - "TARGET_RCPC && (<GPI:sizen> > <ALLX:sizen>)" + "TARGET_RCPC && (<SD_HSDI:sizen> > <ALLX:sizen>)" "ldapr<ALLX:atomic_sfx>\t%w0, %1" ) diff --git a/gcc/testsuite/gcc.target/aarch64/ldapr-zext.c b/gcc/testsuite/gcc.target/aarch64/ldapr-zext.c index 6f448ee..e9d9058 100644 --- a/gcc/testsuite/gcc.target/aarch64/ldapr-zext.c +++ b/gcc/testsuite/gcc.target/aarch64/ldapr-zext.c @@ -65,3 +65,11 @@ TEST(u8_u32, u8, unsigned) */ TEST(u16_u32, u16, unsigned) +/* +**test_u8_u16: +**... +** ldaprb w0, \[x[0-9]+\] +** ret +*/ +TEST(u8_u16, u8, unsigned short) + |