'I' was being double-incremented; correctly within the inner loop
and incorrectly within the outer loop.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
Fixes a SIGSEGV within one of these generated helpers,
exposed by an armclang vectorized code sample.
r~
---
target/arm/sve_helper.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
index cec0d3ee54..ddc592ff79 100644
--- a/target/arm/sve_helper.c
+++ b/target/arm/sve_helper.c
@@ -4855,7 +4855,7 @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \
intptr_t i, oprsz = simd_oprsz(desc); \
unsigned scale = simd_data(desc); \
uintptr_t ra = GETPC(); \
- for (i = 0; i < oprsz; i++) { \
+ for (i = 0; i < oprsz; ) { \
uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \
do { \
TYPEM m = 0; \
@@ -4936,7 +4936,7 @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \
uintptr_t ra = GETPC(); \
bool first = true; \
mmap_lock(); \
- for (i = 0; i < oprsz; i++) { \
+ for (i = 0; i < oprsz; ) { \
uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \
do { \
TYPEM m = 0; \
--
2.17.1
Hello,
On Wed, Jul 11, 2018 at 12:39 PM, Richard Henderson
<richard.henderson@linaro.org> wrote:
> 'I' was being double-incremented; correctly within the inner loop
> and incorrectly within the outer loop.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
I didn't try to apply the patch but line numbers look wrong.
I guess this should apply to DO_LD1_ZPZ_S and DO_LDFF1_ZPZ macros, in
which case you get my review:
Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Thanks,
Laurent
> ---
>
> Fixes a SIGSEGV within one of these generated helpers,
> exposed by an armclang vectorized code sample.
>
>
> r~
>
> ---
> target/arm/sve_helper.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
> index cec0d3ee54..ddc592ff79 100644
> --- a/target/arm/sve_helper.c
> +++ b/target/arm/sve_helper.c
> @@ -4855,7 +4855,7 @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \
> intptr_t i, oprsz = simd_oprsz(desc); \
> unsigned scale = simd_data(desc); \
> uintptr_t ra = GETPC(); \
> - for (i = 0; i < oprsz; i++) { \
> + for (i = 0; i < oprsz; ) { \
> uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \
> do { \
> TYPEM m = 0; \
> @@ -4936,7 +4936,7 @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \
> uintptr_t ra = GETPC(); \
> bool first = true; \
> mmap_lock(); \
> - for (i = 0; i < oprsz; i++) { \
> + for (i = 0; i < oprsz; ) { \
> uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \
> do { \
> TYPEM m = 0; \
> --
> 2.17.1
>
>
On 07/11/2018 04:04 AM, Laurent Desnogues wrote: > Hello, > > On Wed, Jul 11, 2018 at 12:39 PM, Richard Henderson > <richard.henderson@linaro.org> wrote: >> 'I' was being double-incremented; correctly within the inner loop >> and incorrectly within the outer loop. >> >> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > > I didn't try to apply the patch but line numbers look wrong. > > I guess this should apply to DO_LD1_ZPZ_S and DO_LDFF1_ZPZ macros, in > which case you get my review: The patch was pulled out of the middle of a branch, so the line numbers might be off. I probably should have cherry-picked it to master before posting... r~
Richard Henderson <richard.henderson@linaro.org> writes:
> 'I' was being double-incremented; correctly within the inner loop
> and incorrectly within the outer loop.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
> ---
>
> Fixes a SIGSEGV within one of these generated helpers,
> exposed by an armclang vectorized code sample.
>
>
> r~
>
> ---
> target/arm/sve_helper.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
> index cec0d3ee54..ddc592ff79 100644
> --- a/target/arm/sve_helper.c
> +++ b/target/arm/sve_helper.c
> @@ -4855,7 +4855,7 @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \
> intptr_t i, oprsz = simd_oprsz(desc); \
> unsigned scale = simd_data(desc); \
> uintptr_t ra = GETPC(); \
> - for (i = 0; i < oprsz; i++) { \
> + for (i = 0; i < oprsz; ) { \
> uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \
> do { \
> TYPEM m = 0; \
> @@ -4936,7 +4936,7 @@ void HELPER(NAME)(CPUARMState *env, void *vd, void *vg, void *vm, \
> uintptr_t ra = GETPC(); \
> bool first = true; \
> mmap_lock(); \
> - for (i = 0; i < oprsz; i++) { \
> + for (i = 0; i < oprsz; ) { \
> uint16_t pg = *(uint16_t *)(vg + H1_2(i >> 3)); \
> do { \
> TYPEM m = 0; \
--
Alex Bennée
On 11 July 2018 at 11:39, Richard Henderson <richard.henderson@linaro.org> wrote: > 'I' was being double-incremented; correctly within the inner loop > and incorrectly within the outer loop. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > > Fixes a SIGSEGV within one of these generated helpers, > exposed by an armclang vectorized code sample. > Applied to target-arm.next, thanks. -- PMM
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