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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2014-06-06 06:59:22 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2014-06-06 06:59:22 +0000 |
| commit | b58923e2a923e130fbc5420d882b02bdad16fe65 (patch) | |
| tree | e393195e90c0710139c92a43a664d960118499cd /gcc/ira-lives.c | |
| parent | 3def9a976919ceeda85707f324fa2d9a0336a2bb (diff) | |
| download | gcc-b58923e2a923e130fbc5420d882b02bdad16fe65.zip gcc-b58923e2a923e130fbc5420d882b02bdad16fe65.tar.gz gcc-b58923e2a923e130fbc5420d882b02bdad16fe65.tar.bz2 | |
ira-lives.c (single_reg_class): Add missing break.
gcc/
* ira-lives.c (single_reg_class): Add missing break. Explicitly
return NO_REGS for extra address and memory constraints. Handle
operands that match (or are equivalent to something that matches)
extra constant constraints. Ignore other non-register operands.
From-SVN: r211300
Diffstat (limited to 'gcc/ira-lives.c')
| -rw-r--r-- | gcc/ira-lives.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/gcc/ira-lives.c b/gcc/ira-lives.c index 6513320..bb03967 100644 --- a/gcc/ira-lives.c +++ b/gcc/ira-lives.c @@ -839,7 +839,8 @@ single_reg_class (const char *constraints, rtx op, rtx equiv_const) && CONST_DOUBLE_OK_FOR_CONSTRAINT_P (equiv_const, c, constraints))) return NO_REGS; - /* ??? what about memory */ + break; + case 'r': case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'h': case 'j': case 'k': case 'l': @@ -848,9 +849,22 @@ single_reg_class (const char *constraints, rtx op, rtx equiv_const) case 'A': case 'B': case 'C': case 'D': case 'Q': case 'R': case 'S': case 'T': case 'U': case 'W': case 'Y': case 'Z': +#ifdef EXTRA_CONSTRAINT_STR + /* ??? Is this the best way to handle memory constraints? */ + if (EXTRA_MEMORY_CONSTRAINT (c, constraints) + || EXTRA_ADDRESS_CONSTRAINT (c, constraints)) + return NO_REGS; + if (EXTRA_CONSTRAINT_STR (op, c, constraints) + || (equiv_const != NULL_RTX + && CONSTANT_P (equiv_const) + && EXTRA_CONSTRAINT_STR (equiv_const, c, constraints))) + return NO_REGS; +#endif next_cl = (c == 'r' ? GENERAL_REGS : REG_CLASS_FROM_CONSTRAINT (c, constraints)); + if (next_cl == NO_REGS) + break; if (cl == NO_REGS ? ira_class_singleton[next_cl][GET_MODE (op)] < 0 : (ira_class_singleton[cl][GET_MODE (op)] |