Fix _Unwind_Backtrace() for SEH #48
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…rtin Storsjö <martin@martin.st>
krlmlr
force-pushed
the
b-unwind-backtrace-seh
branch
from
f870f2d
to
685cb27
Compare
jwakely
pushed a commit
to jwakely/gcc
that referenced
this pull request
Sep 21, 2020
This patch modifies the MVE scalar shift RTL patterns. The current patterns
have wrong constraints and predicates due to which the values returned from
MVE scalar shift instructions are overwritten in the code-gen.
example:
$ cat x.c
int32_t foo(int64_t acc, int shift)
{
return sqrshrl_sat48 (acc, shift);
}
Code-gen before applying this patch:
$ arm-none-eabi-gcc -march=armv8.1-m.main+mve -mfloat-abi=hard -O2 -S
$ cat x.s
foo:
push {r4, r5}
sqrshrl r0, r1, gcc-mirror#48, r2 ----> (a)
mov r0, r4 ----> (b)
pop {r4, r5}
bx lr
Code-gen after applying this patch:
foo:
sqrshrl r0, r1, gcc-mirror#48, r2
bx lr
In the current compiler the return value (r0) from sqrshrl (a) is getting
overwritten by the mov statement (b).
This patch fixes above issue.
2020-06-12 Srinath Parvathaneni <srinath.parvathaneni@arm.com>
gcc/
* config/arm/mve.md (mve_uqrshll_sat<supf>_di): Correct the predicate
and constraint of all the operands.
(mve_sqrshrl_sat<supf>_di): Likewise.
(mve_uqrshl_si): Likewise.
(mve_sqrshr_si): Likewise.
(mve_uqshll_di): Likewise.
(mve_urshrl_di): Likewise.
(mve_uqshl_si): Likewise.
(mve_urshr_si): Likewise.
(mve_sqshl_si): Likewise.
(mve_srshr_si): Likewise.
(mve_srshrl_di): Likewise.
(mve_sqshll_di): Likewise.
* config/arm/predicates.md (arm_low_register_operand): Define.
gcc/testsuite/
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts1.c: New test.
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts2.c: Likewise.
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts3.c: Likewise.
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts4.c: Likewise.
(cherry picked from commit 6af5987)
dankm
pushed a commit
to dankm/gcc
that referenced
this pull request
Nov 28, 2022
This patch modifies the MVE scalar shift RTL patterns. The current patterns
have wrong constraints and predicates due to which the values returned from
MVE scalar shift instructions are overwritten in the code-gen.
example:
$ cat x.c
int32_t foo(int64_t acc, int shift)
{
return sqrshrl_sat48 (acc, shift);
}
Code-gen before applying this patch:
$ arm-none-eabi-gcc -march=armv8.1-m.main+mve -mfloat-abi=hard -O2 -S
$ cat x.s
foo:
push {r4, r5}
sqrshrl r0, r1, gcc-mirror#48, r2 ----> (a)
mov r0, r4 ----> (b)
pop {r4, r5}
bx lr
Code-gen after applying this patch:
foo:
sqrshrl r0, r1, gcc-mirror#48, r2
bx lr
In the current compiler the return value (r0) from sqrshrl (a) is getting
overwritten by the mov statement (b).
This patch fixes above issue.
2020-06-12 Srinath Parvathaneni <srinath.parvathaneni@arm.com>
gcc/
* config/arm/mve.md (mve_uqrshll_sat<supf>_di): Correct the predicate
and constraint of all the operands.
(mve_sqrshrl_sat<supf>_di): Likewise.
(mve_uqrshl_si): Likewise.
(mve_sqrshr_si): Likewise.
(mve_uqshll_di): Likewise.
(mve_urshrl_di): Likewise.
(mve_uqshl_si): Likewise.
(mve_urshr_si): Likewise.
(mve_sqshl_si): Likewise.
(mve_srshr_si): Likewise.
(mve_srshrl_di): Likewise.
(mve_sqshll_di): Likewise.
* config/arm/predicates.md (arm_low_register_operand): Define.
gcc/testsuite/
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts1.c: New test.
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts2.c: Likewise.
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts3.c: Likewise.
* gcc.target/arm/mve/intrinsics/mve_scalar_shifts4.c: Likewise.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Applies cleanly to GCC 8.3.0, perhaps also much earlier.