From 65fed0cb234b7fb05da20b74be80460bffd96a06 Mon Sep 17 00:00:00 2001 From: Richard Kenner Date: Tue, 27 Jun 1995 07:27:14 -0400 Subject: [PATCH] (expand_asm_operands): Handle input operands that may not be in a register. From-SVN: r10060 --- gcc/stmt.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 49 insertions(+), 6 deletions(-) diff --git a/gcc/stmt.c b/gcc/stmt.c index 02ac0e655d3..02ef0db2bf6 100644 --- a/gcc/stmt.c +++ b/gcc/stmt.c @@ -1517,6 +1517,7 @@ expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line) for (tail = inputs; tail; tail = TREE_CHAIN (tail)) { int j; + int allows_reg = 0; /* If there's an erroneous arg, emit no insn, because the ASM_INPUT would get VOIDmode @@ -1532,23 +1533,65 @@ expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line) /* Make sure constraint has neither `=' nor `+'. */ - for (j = 0; j < TREE_STRING_LENGTH (TREE_PURPOSE (tail)); j++) - if (TREE_STRING_POINTER (TREE_PURPOSE (tail))[j] == '=' - || TREE_STRING_POINTER (TREE_PURPOSE (tail))[j] == '+') + for (j = 0; j < TREE_STRING_LENGTH (TREE_PURPOSE (tail)) - 1; j++) + switch (TREE_STRING_POINTER (TREE_PURPOSE (tail))[j]) { + case '+': case '=': error ("input operand constraint contains `%c'", TREE_STRING_POINTER (TREE_PURPOSE (tail))[j]); return; + + case '?': case '!': case '*': case '%': case '&': + case '0': case '1': case '2': case '3': case '4': + case 'V': case 'm': case 'o': case '<': case '>': + case 'E': case 'F': case 'G': case 'H': case 'X': + case 's': case 'i': case 'n': + case 'I': case 'J': case 'K': case 'L': case 'M': + case 'N': case 'O': case 'P': case ',': +#ifdef EXTRA_CONSTRAINT + case 'Q': case 'R': case 'S': case 'T': case 'U': +#endif + break; + + case 'p': case 'g': case 'r': + default: + allows_reg = 1; + break; } + if (! allows_reg) + mark_addressable (TREE_VALUE (tail)); + XVECEXP (body, 3, i) /* argvec */ = expand_expr (TREE_VALUE (tail), NULL_RTX, VOIDmode, 0); if (CONSTANT_P (XVECEXP (body, 3, i)) && ! general_operand (XVECEXP (body, 3, i), TYPE_MODE (TREE_TYPE (TREE_VALUE (tail))))) - XVECEXP (body, 3, i) - = force_reg (TYPE_MODE (TREE_TYPE (TREE_VALUE (tail))), - XVECEXP (body, 3, i)); + { + if (allows_reg) + XVECEXP (body, 3, i) + = force_reg (TYPE_MODE (TREE_TYPE (TREE_VALUE (tail))), + XVECEXP (body, 3, i)); + else + XVECEXP (body, 3, i) + = force_const_mem (TYPE_MODE (TREE_TYPE (TREE_VALUE (tail))), + XVECEXP (body, 3, i)); + } + + if (! allows_reg + && (GET_CODE (XVECEXP (body, 3, i)) == REG + || GET_CODE (XVECEXP (body, 3, i)) == SUBREG + || GET_CODE (XVECEXP (body, 3, i)) == CONCAT)) + { + tree type = TREE_TYPE (TREE_VALUE (tail)); + rtx memloc = assign_stack_temp (TYPE_MODE (type), + int_size_in_bytes (type), 1); + + MEM_IN_STRUCT_P (memloc) = AGGREGATE_TYPE_P (type); + emit_move_insn (memloc, XVECEXP (body, 3, i)); + XVECEXP (body, 3, i) = memloc; + } + XVECEXP (body, 4, i) /* constraints */ = gen_rtx (ASM_INPUT, TYPE_MODE (TREE_TYPE (TREE_VALUE (tail))), TREE_STRING_POINTER (TREE_PURPOSE (tail))); -- 2.30.2