diff options
| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-05-29 17:48:14 +0000 |
|---|---|---|
| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-05-29 17:48:14 +0000 |
| commit | c3806c1e1e0c9895d17d729a96179f71f124857e (patch) | |
| tree | 2b256a1d6be26d4c13b6ca6497da4c5c771b1112 | |
| parent | 158892fce220b03d3fe3d8d7656e1b0786609283 (diff) | |
gcc/
* config/mips/mips.c (mips_cfun_call_saved_reg_p): Handle global
registers.
gcc/testsuite/
* gcc.target/mips/reg-var-1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174405 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/mips/mips.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/mips/reg-var-1.c | 16 |
4 files changed, 30 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 32933d9244f..083dfd400b7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2011-05-29 Richard Sandiford <rdsandiford@googlemail.com> + * config/mips/mips.c (mips_cfun_call_saved_reg_p): Handle global + registers. + +2011-05-29 Richard Sandiford <rdsandiford@googlemail.com> + PR target/43995 * config/mips/mips.c (mips_pic_call_symbol_from_set): Add a recurse_p argument. Only follow register copies if it is set, diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c index 027fc2d7a01..8069a0bd736 100644 --- a/gcc/config/mips/mips.c +++ b/gcc/config/mips/mips.c @@ -9053,6 +9053,11 @@ mips_interrupt_extra_call_saved_reg_p (unsigned int regno) static bool mips_cfun_call_saved_reg_p (unsigned int regno) { + /* If the user makes an ordinarily-call-saved register global, + that register is no longer call-saved. */ + if (global_regs[regno]) + return false; + /* Interrupt handlers need to save extra registers. */ if (cfun->machine->interrupt_handler_p && mips_interrupt_extra_call_saved_reg_p (regno)) diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d32e95a5bdf..2f50595950b 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2011-05-29 Richard Sandiford <rdsandiford@googlemail.com> + + * gcc.target/mips/reg-var-1.c: New test. + 2011-05-29 Richard Guenther <rguenther@suse.de> PR tree-optimization/49217 diff --git a/gcc/testsuite/gcc.target/mips/reg-var-1.c b/gcc/testsuite/gcc.target/mips/reg-var-1.c new file mode 100644 index 00000000000..d8b8118103a --- /dev/null +++ b/gcc/testsuite/gcc.target/mips/reg-var-1.c @@ -0,0 +1,16 @@ +/* { dg-do run } */ +register int g asm ("$18"); + +void __attribute__((noinline)) +test (void) +{ + g = g + 1; +} + +int +main (void) +{ + g = 2; + test (); + return g != 3; +} |