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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-08-12 18:59:51 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-08-12 18:59:51 -0400 |
| commit | c9734bb90e64764d0dd2a305d4eebe099b869561 (patch) | |
| tree | 7c0b0675a0f343546ac8ae231d3e70c75467a01a /gcc | |
| parent | 426749e8af8eb4b0838ea81aaa9c41138ff160de (diff) | |
| download | gcc-c9734bb90e64764d0dd2a305d4eebe099b869561.zip gcc-c9734bb90e64764d0dd2a305d4eebe099b869561.tar.gz gcc-c9734bb90e64764d0dd2a305d4eebe099b869561.tar.bz2 | |
(expand_inline_function): Use single_set when appropriate.
Delete insn that sets static_chain_incoming_rtx before its use.
(subst_constants): Treat virtual reg as constant.
From-SVN: r7910
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/integrate.c | 44 |
1 files changed, 31 insertions, 13 deletions
diff --git a/gcc/integrate.c b/gcc/integrate.c index 26d7663..1f4874c 100644 --- a/gcc/integrate.c +++ b/gcc/integrate.c @@ -1645,7 +1645,7 @@ expand_inline_function (fndecl, parms, target, ignore, type, structure_value_add for (insn = insns; insn; insn = NEXT_INSN (insn)) { - rtx copy, pattern; + rtx copy, pattern, set; map->orig_asm_operands_vector = 0; @@ -1653,6 +1653,7 @@ expand_inline_function (fndecl, parms, target, ignore, type, structure_value_add { case INSN: pattern = PATTERN (insn); + set = single_set (insn); copy = 0; if (GET_CODE (pattern) == USE && GET_CODE (XEXP (pattern, 0)) == REG @@ -1664,33 +1665,47 @@ expand_inline_function (fndecl, parms, target, ignore, type, structure_value_add /* Ignore setting a function value that we don't want to use. */ if (map->inline_target == 0 - && GET_CODE (pattern) == SET - && GET_CODE (SET_DEST (pattern)) == REG - && REG_FUNCTION_VALUE_P (SET_DEST (pattern))) + && set != 0 + && GET_CODE (SET_DEST (set)) == REG + && REG_FUNCTION_VALUE_P (SET_DEST (set))) { - if (volatile_refs_p (SET_SRC (pattern))) + if (volatile_refs_p (SET_SRC (set))) { + rtx new_set; + /* If we must not delete the source, load it into a new temporary. */ copy = emit_insn (copy_rtx_and_substitute (pattern, map)); - SET_DEST (PATTERN (copy)) - = gen_reg_rtx (GET_MODE (SET_DEST (PATTERN (copy)))); + + new_set = single_set (copy); + if (new_set == 0) + abort (); + + SET_DEST (new_set) + = gen_reg_rtx (GET_MODE (SET_DEST (new_set))); } else break; } + + /* If this is setting the static chain rtx, omit it. */ + else if (static_chain_value != 0 + && set != 0 + && GET_CODE (SET_DEST (set)) == REG + && rtx_equal_p (SET_DEST (set), + static_chain_incoming_rtx)) + break; + /* If this is setting the static chain pseudo, set it from the value we want to give it instead. */ else if (static_chain_value != 0 - && GET_CODE (pattern) == SET - && rtx_equal_p (SET_SRC (pattern), + && set != 0 + && rtx_equal_p (SET_SRC (set), static_chain_incoming_rtx)) { - rtx newdest = copy_rtx_and_substitute (SET_DEST (pattern), map); - - copy = emit_insn (gen_rtx (SET, VOIDmode, newdest, - static_chain_value)); + rtx newdest = copy_rtx_and_substitute (SET_DEST (set), map); + copy = emit_move_insn (newdest, static_chain_value); static_chain_value = 0; } else @@ -2590,6 +2605,9 @@ subst_constants (loc, insn, map) /* If storing a recognizable value save it for later recording. */ if ((map->num_sets < MAX_RECOG_OPERANDS) && (CONSTANT_P (src) + || (GET_CODE (src) == REG + && REGNO (src) >= FIRST_VIRTUAL_REGISTER + && REGNO (src) <= LAST_VIRTUAL_REGISTER) || (GET_CODE (src) == PLUS && GET_CODE (XEXP (src, 0)) == REG && REGNO (XEXP (src, 0)) >= FIRST_VIRTUAL_REGISTER |