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| author | Richard Kenner <kenner@vlsi1.ultra.nyu.edu> | 2001-10-18 21:34:14 +0000 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 2001-10-18 17:34:14 -0400 |
| commit | 0d4903b81e2e5f9371c330a82ddad63af0bb272a (patch) | |
| tree | 8efd4ef27021837ed8a888f7f93fac0cede0d926 /gcc/regclass.c | |
| parent | eacecf96651d07155d20c784f4ab8862b57b3a50 (diff) | |
| download | gcc-0d4903b81e2e5f9371c330a82ddad63af0bb272a.tar.gz | |
emit-rtl.c (gen_reg_rtx): Also reallocate reg_decl array.
* emit-rtl.c (gen_reg_rtx): Also reallocate reg_decl array.
(offset_address): New function.
(free_emit_status): Free regno_decl.
(init_emit): Pass proper number of elements to xcalloc.
Allocate regno_decl.
(mark_emit_status): Mark regno_decl values.
* expr.c (highest_pow2_factor): New function.
(expand_assigment): Use it and offset_address.
Properly handle ptr_mode vs. Pmode in offset calculation.
(store_constructor, expand_expr_unaligned): Likewise.
(expand_expr, case COMPONENT_EXPR): Likewise.
* expr.h (offset_address): New decl.
* function.h (struct emit_status): Add regno_decl.
(REGNO_DECL): New macro.
* final.c (output_asm_name): Move in file and don't conditionalize
on flag_print_asm_name.
(output_asm_insn): Only call output_asm_name if flag_print_asm_name.
Output names of operands, if known.
* function.c (assign_parms): Set REGNO_DECL.
* integrate.c (integrate_decl_tree): Likewise.
* stmt.c (expand_decl): Likewise.
* regclass.c (reg_scan_mark_refs): Propagate REGNO_DECL for copies.
From-SVN: r46337
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index a514bd5a4a6..826da242dc1 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -2496,6 +2496,24 @@ reg_scan_mark_refs (x, insn, note_flag, min_regno) || GET_CODE (XEXP (note, 0)) == LABEL_REF)))) REG_POINTER (SET_DEST (x)) = 1; + /* If this is setting a register from a register or from a simple + conversion of a register, propagate REG_DECL. */ + if (GET_CODE (dest) == REG) + { + rtx src = SET_SRC (x); + + while (GET_CODE (src) == SIGN_EXTEND + || GET_CODE (src) == ZERO_EXTEND + || GET_CODE (src) == TRUNCATE + || (GET_CODE (src) == SUBREG && subreg_lowpart_p (src))) + src = XEXP (src, 0); + + if (GET_CODE (src) == REG && REGNO_DECL (REGNO (src)) == 0) + REGNO_DECL (REGNO (src)) = REGNO_DECL (REGNO (dest)); + else if (GET_CODE (src) == REG && REGNO_DECL (REGNO (dest)) == 0) + REGNO_DECL (REGNO (dest)) = REGNO_DECL (REGNO (src)); + } + /* ... fall through ... */ default: |