diff options
| author | Terry Guo <terry.guo@arm.com> | 2012-12-19 11:40:52 +0000 |
|---|---|---|
| committer | Xuepeng Guo <xguo@gcc.gnu.org> | 2012-12-19 11:40:52 +0000 |
| commit | 47b33e4c65161d94faafc23832ea9d1978f339f9 (patch) | |
| tree | 3a3ffdc613320447adc2800322607ab51fa4e7a2 | |
| parent | 36085529ca2fd651b3109eb920bf8010859db0be (diff) | |
| download | gcc-47b33e4c65161d94faafc23832ea9d1978f339f9.zip gcc-47b33e4c65161d94faafc23832ea9d1978f339f9.tar.gz gcc-47b33e4c65161d94faafc23832ea9d1978f339f9.tar.bz2 | |
arm.c (thumb_find_work_register): Check argument register number based on current PCS.
gcc/ChangeLog:
2012-12-19 Terry Guo <terry.guo@arm.com>
* config/arm/arm.c (thumb_find_work_register): Check argument
register number based on current PCS.
gcc/testsuite/ChangeLog:
2012-12-19 Terry Guo <terry.guo@arm.com>
* gcc.target/arm/thumb-find-work-register.c: New.
From-SVN: r194605
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/arm/arm.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/arm/thumb-find-work-register.c | 40 |
4 files changed, 52 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7b103fe..5c6c840 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2012-12-19 Terry Guo <terry.guo@arm.com> + + * config/arm/arm.c (thumb_find_work_register): Check argument + register number based on current PCS. + 2012-12-18 Jakub Jelinek <jakub@redhat.com> PR target/55562 diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 84ce56f..15f9c9b 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -5566,7 +5566,9 @@ thumb_find_work_register (unsigned long pushed_regs_mask) if (! cfun->machine->uses_anonymous_args && crtl->args.size >= 0 && crtl->args.size <= (LAST_ARG_REGNUM * UNITS_PER_WORD) - && crtl->args.info.nregs < 4) + && (TARGET_AAPCS_BASED + ? crtl->args.info.aapcs_ncrn < 4 + : crtl->args.info.nregs < 4)) return LAST_ARG_REGNUM; /* Otherwise look for a call-saved register that is going to be pushed. */ diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index f5a9835..6719b29 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2012-12-19 Terry Guo <terry.guo@arm.com> + + * gcc.target/arm/thumb-find-work-register.c: New. + 2012-12-19 Tobias Burnus <burnus@net-b.de> PR fortran/55733 diff --git a/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c b/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c new file mode 100644 index 0000000..f2c0225 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/thumb-find-work-register.c @@ -0,0 +1,40 @@ +/* Wrong method to get number of arg reg will cause argument corruption. */ +/* { dg-do run } */ +/* { dg-require-effective-target arm_eabi } */ +/* { dg-options "-mthumb -O1" } */ + +extern void abort (void); + +int foo (int, int, int, int) __attribute__((noinline)); + +int +foo (int a, int b, int c, int d) +{ + register int m asm ("r8"); + + m = a; + m += b; + m += c; + m += d; + + asm ("" : "=r" (m) : "0" (m)); + + return m; +} + +int +main () +{ + volatile int a = 10; + volatile int b = 20; + volatile int c = 30; + volatile int d = 40; + volatile int sum = 0; + + sum = foo (a, b, c, d); + + if (sum != 100) + abort (); + + return 0; +} |