diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 36 |
1 files changed, 0 insertions, 36 deletions
@@ -346,11 +346,6 @@ static struct cse_reg_info *cached_cse_reg_info; static HARD_REG_SET hard_regs_in_table; -/* A HARD_REG_SET containing all the hard registers that are invalidated - by a CALL_INSN. */ - -static HARD_REG_SET regs_invalidated_by_call; - /* CUID of insn that starts the basic block currently being cse-processed. */ static int cse_basic_block_start; @@ -7072,37 +7067,6 @@ cse_main (f, nregs, after_loop, file) INSN_CUID (insn) = i; } - /* Initialize which registers are clobbered by calls. */ - - CLEAR_HARD_REG_SET (regs_invalidated_by_call); - - for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - if ((call_used_regs[i] - /* Used to check !fixed_regs[i] here, but that isn't safe; - fixed regs are still call-clobbered, and sched can get - confused if they can "live across calls". - - The frame pointer is always preserved across calls. The arg - pointer is if it is fixed. The stack pointer usually is, unless - RETURN_POPS_ARGS, in which case an explicit CLOBBER - will be present. If we are generating PIC code, the PIC offset - table register is preserved across calls. */ - - && i != STACK_POINTER_REGNUM - && i != FRAME_POINTER_REGNUM -#if HARD_FRAME_POINTER_REGNUM != FRAME_POINTER_REGNUM - && i != HARD_FRAME_POINTER_REGNUM -#endif -#if ARG_POINTER_REGNUM != FRAME_POINTER_REGNUM - && ! (i == ARG_POINTER_REGNUM && fixed_regs[i]) -#endif -#if !defined (PIC_OFFSET_TABLE_REG_CALL_CLOBBERED) - && ! (i == PIC_OFFSET_TABLE_REGNUM && flag_pic) -#endif - ) - || global_regs[i]) - SET_HARD_REG_BIT (regs_invalidated_by_call, i); - ggc_push_context (); /* Loop over basic blocks. |