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| author | Jeffrey A Law <law@cygnus.com> | 2001-02-19 00:05:49 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2001-02-18 17:05:49 -0700 |
| commit | 3335f1d984358b093678719844d52027ec5d01e1 (patch) | |
| tree | 19d7be78d89e48bd3e789632fac7f037bd11c43d /gcc/rtlanal.c | |
| parent | 021921d0e44e1ab96434d8881b96306bd3df4c31 (diff) | |
| download | gcc-3335f1d984358b093678719844d52027ec5d01e1.tar.gz | |
Makefile.in (rtlanal.o): Depend on hard-reg-set.h.
* Makefile.in (rtlanal.o): Depend on hard-reg-set.h.
($HOST_PREFIX_1)rtlanal.o: Remove rules for building
(mostlyclean): Corresponding changes.
* rtlanal.c (hard-reg-set.h): Include.
(rtx_unstable_p): Do not treat the argument pointer specially
if it is not a fixed register.
(rtx_varies_p, rtx_addr_can_trap_p): Similarly.
From-SVN: r39860
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 5dc2af586a3..6e6ed8e7b2b 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -24,6 +24,7 @@ Boston, MA 02111-1307, USA. */ #include "system.h" #include "toplev.h" #include "rtl.h" +#include "hard-reg-set.h" /* Forward declarations */ static void set_of_1 PARAMS ((rtx, rtx, void *)); @@ -67,7 +68,9 @@ rtx_unstable_p (x) case REG: /* As in rtx_varies_p, we have to use the actual rtx, not reg number. */ if (x == frame_pointer_rtx || x == hard_frame_pointer_rtx - || x == arg_pointer_rtx || RTX_UNCHANGING_P (x)) + /* The arg pointer varies if it is not a fixed register. */ + || (x == arg_pointer_rtx && fixed_regs[ARG_POINTER_REGNUM]) + || RTX_UNCHANGING_P (x)) return 0; #ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED /* ??? When call-clobbered, the value is stable modulo the restore @@ -143,7 +146,8 @@ rtx_varies_p (x, for_alias) eliminated the frame and/or arg pointer and are using it for pseudos. */ if (x == frame_pointer_rtx || x == hard_frame_pointer_rtx - || x == arg_pointer_rtx) + /* The arg pointer varies if it is not a fixed register. */ + || (x == arg_pointer_rtx && fixed_regs[ARG_POINTER_REGNUM])) return 0; if (x == pic_offset_table_rtx #ifdef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED @@ -211,7 +215,9 @@ rtx_addr_can_trap_p (x) case REG: /* As in rtx_varies_p, we have to use the actual rtx, not reg number. */ return ! (x == frame_pointer_rtx || x == hard_frame_pointer_rtx - || x == stack_pointer_rtx || x == arg_pointer_rtx); + || x == stack_pointer_rtx + /* The arg pointer varies if it is not a fixed register. */ + || (x == arg_pointer_rtx && fixed_regs[ARG_POINTER_REGNUM])); case CONST: return rtx_addr_can_trap_p (XEXP (x, 0)); |