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| author | Dan Li <ashimida@linux.alibaba.com> | 2021-11-01 11:04:12 +0000 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@arm.com> | 2021-11-01 11:04:12 +0000 |
| commit | 14d31404053c1818044882f8682a20de1526b266 (patch) | |
| tree | 75f266e546321d2d510b62f1aa8d6433613423eb /gcc | |
| parent | 4851c80ce8de18896dc5c4b1b023afa8456736ba (diff) | |
| download | gcc-14d31404053c1818044882f8682a20de1526b266.zip gcc-14d31404053c1818044882f8682a20de1526b266.tar.gz gcc-14d31404053c1818044882f8682a20de1526b266.tar.bz2 | |
aarch64: Fix redundant check in aut insn generation
During the generation of the epilogue of aarch64(aarch64_expand_epilogue),
the value of crtl->calls_eh_return does not need to be checked again.
This value has been checked during aarch64_return_address_signing_enabled.
gcc/ChangeLog:
* config/aarch64/aarch64.c (aarch64_expand_epilogue): Remove
redundant check for calls_eh_return.
* config/aarch64/aarch64.md (*do_return): Likewise.
Signed-off-by: Dan Li <ashimida@linux.alibaba.com>
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 6 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.md | 3 |
2 files changed, 2 insertions, 7 deletions
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 699c105..8448e56 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -9076,13 +9076,9 @@ aarch64_expand_epilogue (bool for_sibcall) 2) The RETAA instruction is not available before ARMv8.3-A, so if we are generating code for !TARGET_ARMV8_3 we can't use it and must explicitly authenticate. - - 3) On an eh_return path we make extra stack adjustments to update the - canonical frame address to be the exception handler's CFA. We want - to authenticate using the CFA of the function which calls eh_return. */ if (aarch64_return_address_signing_enabled () - && (for_sibcall || !TARGET_ARMV8_3 || crtl->calls_eh_return)) + && (for_sibcall || !TARGET_ARMV8_3)) { switch (aarch64_ra_sign_key) { diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md index 1a39470..65ee615 100644 --- a/gcc/config/aarch64/aarch64.md +++ b/gcc/config/aarch64/aarch64.md @@ -879,8 +879,7 @@ { const char *ret = NULL; if (aarch64_return_address_signing_enabled () - && (TARGET_PAUTH) - && !crtl->calls_eh_return) + && (TARGET_PAUTH)) { if (aarch64_ra_sign_key == AARCH64_KEY_B) ret = "retab"; |