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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2012-04-21 18:55:18 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2012-04-21 18:55:18 +0000 |
| commit | 9e412ca3ebe589537430ce89c4342ca08f251d69 (patch) | |
| tree | b0d6f2ebda9f50cb79a963c6fdd93ec04cda0025 /gcc/alias.c | |
| parent | 1410c222604e2182f74242026fd924c717ced000 (diff) | |
| download | gcc-9e412ca3ebe589537430ce89c4342ca08f251d69.zip gcc-9e412ca3ebe589537430ce89c4342ca08f251d69.tar.gz gcc-9e412ca3ebe589537430ce89c4342ca08f251d69.tar.bz2 | |
re PR bootstrap/53021 (bootstrap failure on Linux/ia32)
gcc/
PR bootstrap/53021
* rtl.def (ADDRESS): Use "i" rather than "w".
* rtl.h (find_base_term): Delete.
(may_be_sp_based_p): Declare.
* rtl.c (rtx_code_size): Remove ADDRESS special case.
* alias.h (UNIQUE_BASE_VALUE_SP, UNIQUE_BASE_VALUE_ARGP)
(UNIQUE_BASE_VALUE_FP, UNIQUE_BASE_VALUE_HFP): Move to...
* alias.c: ...here.
(find_base_term): Make static.
(may_be_sp_based_p): New function.
* dse.c (record_store): Use it.
* store-motion.c (store_killed_in_insn): Likewise.
From-SVN: r186657
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 7b1986c..8366f9c 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -228,6 +228,13 @@ static int unique_id; array. */ static GTY((deletable)) VEC(rtx,gc) *old_reg_base_value; +/* Values of XINT (address, 0) of Pmode ADDRESS rtxes for special + registers. */ +#define UNIQUE_BASE_VALUE_SP -1 +#define UNIQUE_BASE_VALUE_ARGP -2 +#define UNIQUE_BASE_VALUE_FP -3 +#define UNIQUE_BASE_VALUE_HFP -4 + #define static_reg_base_value \ (this_target_rtl->x_static_reg_base_value) @@ -1584,7 +1591,7 @@ rtx_equal_for_memref_p (const_rtx x, const_rtx y) return 1; } -rtx +static rtx find_base_term (rtx x) { cselib_val *val; @@ -1740,6 +1747,16 @@ find_base_term (rtx x) } } +/* Return true if accesses to address X may alias accesses based + on the stack pointer. */ + +bool +may_be_sp_based_p (rtx x) +{ + rtx base = find_base_term (x); + return !base || base == static_reg_base_value[STACK_POINTER_REGNUM]; +} + /* Return 0 if the addresses X and Y are known to point to different objects, 1 if they might be pointers to the same object. */ |