+2010-11-08 Joern Rennecke <amylaar@spamcop.net>
+
+ * caller-save.c (reg_save_code): After HARD_REGNO_MODE_OK check fails,
+ assert that REG is a hard register number before using it as an index.
+
2010-11-08 Eric Botcazou <ebotcazou@adacore.com>
PR target/46208
if (cached_reg_save_code[reg][mode])
return cached_reg_save_code[reg][mode];
if (!HARD_REGNO_MODE_OK (reg, mode))
- {
- cached_reg_save_code[reg][mode] = -1;
- cached_reg_restore_code[reg][mode] = -1;
- return -1;
- }
+ {
+ /* Depending on how HARD_REGNO_MODE_OK is defined, range propagation
+ might deduce here that reg >= FIRST_PSEUDO_REGISTER. So the assert
+ below silences a warning. */
+ gcc_assert (reg < FIRST_PSEUDO_REGISTER);
+ cached_reg_save_code[reg][mode] = -1;
+ cached_reg_restore_code[reg][mode] = -1;
+ return -1;
+ }
/* Update the register number and modes of the register
and memory operand. */