diff options
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/gcc/function.c b/gcc/function.c index 2d4ace5..7624342 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -206,7 +206,6 @@ static int contains (rtx, varray_type); #ifdef HAVE_return static void emit_return_into_block (basic_block, rtx); #endif -static void purge_single_hard_subreg_set (rtx); #if defined(HAVE_epilogue) && defined(INCOMING_RETURN_ADDR_RTX) static rtx keep_stack_depressed (rtx); #endif @@ -293,7 +292,6 @@ pop_function_context_from (tree context ATTRIBUTE_UNUSED) lang_hooks.function.leave_nested (p); /* Reset variables that have known state during rtx generation. */ - rtx_equal_function_value_matters = 1; virtuals_instantiated = 0; generating_concat_p = 1; } @@ -1248,74 +1246,6 @@ static int cfa_offset; #endif -/* Convert a SET of a hard subreg to a set of the appropriate hard - register. A subroutine of purge_hard_subreg_sets. */ - -static void -purge_single_hard_subreg_set (rtx pattern) -{ - rtx reg = SET_DEST (pattern); - enum machine_mode mode = GET_MODE (SET_DEST (pattern)); - int offset = 0; - - if (GET_CODE (reg) == SUBREG && REG_P (SUBREG_REG (reg)) - && REGNO (SUBREG_REG (reg)) < FIRST_PSEUDO_REGISTER) - { - offset = subreg_regno_offset (REGNO (SUBREG_REG (reg)), - GET_MODE (SUBREG_REG (reg)), - SUBREG_BYTE (reg), - GET_MODE (reg)); - reg = SUBREG_REG (reg); - } - - - if (REG_P (reg) && REGNO (reg) < FIRST_PSEUDO_REGISTER) - { - reg = gen_rtx_REG (mode, REGNO (reg) + offset); - SET_DEST (pattern) = reg; - } -} - -/* Eliminate all occurrences of SETs of hard subregs from INSNS. The - only such SETs that we expect to see are those left in because - integrate can't handle sets of parts of a return value register. - - We don't use alter_subreg because we only want to eliminate subregs - of hard registers. */ - -void -purge_hard_subreg_sets (rtx insn) -{ - for (; insn; insn = NEXT_INSN (insn)) - { - if (INSN_P (insn)) - { - rtx pattern = PATTERN (insn); - switch (GET_CODE (pattern)) - { - case SET: - if (GET_CODE (SET_DEST (pattern)) == SUBREG) - purge_single_hard_subreg_set (pattern); - break; - case PARALLEL: - { - int j; - for (j = XVECLEN (pattern, 0) - 1; j >= 0; j--) - { - rtx inner_pattern = XVECEXP (pattern, 0, j); - if (GET_CODE (inner_pattern) == SET - && GET_CODE (SET_DEST (inner_pattern)) == SUBREG) - purge_single_hard_subreg_set (inner_pattern); - } - } - break; - default: - break; - } - } - } -} - /* Pass through the INSNS of function FNDECL and convert virtual register references to hard register references. */ @@ -3904,10 +3834,6 @@ prepare_function_start (tree fndecl) /* We haven't done register allocation yet. */ reg_renumber = 0; - /* Indicate that we need to distinguish between the return value of the - present function and the return value of a function being called. */ - rtx_equal_function_value_matters = 1; - /* Indicate that we have not instantiated virtual registers yet. */ virtuals_instantiated = 0; |