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| author | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-01-08 18:42:50 +0000 |
|---|---|---|
| committer | ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-01-08 18:42:50 +0000 |
| commit | 104e5f3e3f9e8858bbf19c8f7ac730af09906f4f (patch) | |
| tree | b0577ae862fcd32d16870ebfd8abb8a565e039fe | |
| parent | 4b4bc4aad1b41c818ccad1bdebba22e26404d72e (diff) | |
| download | gcc-104e5f3e3f9e8858bbf19c8f7ac730af09906f4f.tar.gz | |
[arm] PR target/82975: Guard against reg_renumber being NULL in arm.h
Backport from mainline
2017-12-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/82975
* config/arm/arm.h (TEST_REGNO): Adjust comment as expected in r255830.
* gcc.dg/pr82975.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256350 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/arm/arm.h | 8 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr82975.c | 20 |
4 files changed, 39 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d5ab8bc9a10..02a444da0cf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2018-01-08 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + Backport from mainline + 2017-12-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + PR target/82975 + * config/arm/arm.h (TEST_REGNO): Adjust comment as expected in r255830. + 2018-01-08 Sebastian Huber <sebastian.huber@embedded-brains.de> Backported from mainline diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index 275004af938..25953f53bd6 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -1662,12 +1662,10 @@ enum arm_auto_incmodes /* These assume that REGNO is a hard or pseudo reg number. They give nonzero only if REGNO is a hard reg of the suitable class - or a pseudo reg currently allocated to a suitable hard reg. - Since they use reg_renumber, they are safe only once reg_renumber - has been allocated, which happens in reginfo.c during register - allocation. */ + or a pseudo reg currently allocated to a suitable hard reg. */ #define TEST_REGNO(R, TEST, VALUE) \ - ((R TEST VALUE) || ((unsigned) reg_renumber[R] TEST VALUE)) + ((R TEST VALUE) \ + || (reg_renumber && ((unsigned) reg_renumber[R] TEST VALUE))) /* Don't allow the pc to be used. */ #define ARM_REGNO_OK_FOR_BASE_P(REGNO) \ diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index c6c7916ae39..27e93371701 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,11 @@ +2018-01-08 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + Backport from mainline + 2017-12-19 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + PR target/82975 + * gcc.dg/pr82975.c: New test. + 2018-01-04 Uros Bizjak <ubizjak@gmail.com> PR target/83628 diff --git a/gcc/testsuite/gcc.dg/pr82975.c b/gcc/testsuite/gcc.dg/pr82975.c new file mode 100644 index 00000000000..422ba6c6855 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr82975.c @@ -0,0 +1,20 @@ +/* PR target/82975. */ +/* { dg-do compile } */ +/* { dg-options "-fno-sched-pressure -O2" } */ +/* { dg-additional-options "-mtune=cortex-a57" { target arm*-*-* aarch64*-*-* } } */ + +typedef __SIZE_TYPE__ size_t; + +struct S1 +{ + char pad1; + char val; + short pad2; +}; + +extern char t[256]; + +void foo (struct S1 a, size_t i) +{ + t[i] = a.val; +} |