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| author | Stan Cox <coxs@gnu.org> | 1996-02-16 16:59:27 +0000 |
|---|---|---|
| committer | Stan Cox <coxs@gnu.org> | 1996-02-16 16:59:27 +0000 |
| commit | 0afeb08a70db2010b7c0fc5db09c1c5c454271d7 (patch) | |
| tree | a9f1fb5c2fc04556f3890f115db0cce71246102f /gcc | |
| parent | b7237e6d0665c26eb8a85bcaba32e1a2b5992588 (diff) | |
| download | gcc-0afeb08a70db2010b7c0fc5db09c1c5c454271d7.zip gcc-0afeb08a70db2010b7c0fc5db09c1c5c454271d7.tar.gz gcc-0afeb08a70db2010b7c0fc5db09c1c5c454271d7.tar.bz2 | |
(ix86_expand_binary_operator): Allow for operand1 of MINUS to be CONST_INT
From-SVN: r11289
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index aef0c8e..212c67b 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -1560,6 +1560,14 @@ ix86_expand_binary_operator (code, mode, operands) if (GET_CODE (operands[2]) == MEM) operands[2] = force_reg (GET_MODE (operands[2]), operands[2]); + + if (GET_CODE (operands[1]) == CONST_INT && code == MINUS) + { + rtx temp = gen_reg_rtx (GET_MODE (operands[0])); + emit_move_insn (temp, operands[1]); + operands[1] = temp; + return TRUE; + } } if (!ix86_binary_operator_ok (code, mode, operands)) @@ -1584,6 +1592,14 @@ ix86_expand_binary_operator (code, mode, operands) modified = TRUE; } + if (GET_CODE (operands[1]) == CONST_INT && code == MINUS) + { + rtx temp = gen_reg_rtx (GET_MODE (operands[0])); + emit_move_insn (temp, operands[1]); + operands[1] = temp; + return TRUE; + } + if (modified && !ix86_binary_operator_ok (code, mode, operands)) return FALSE; } @@ -1603,7 +1619,9 @@ ix86_binary_operator_ok (code, mode, operands) enum machine_mode mode; rtx operands[3]; { - return TRUE; + return (GET_CODE (operands[1]) != MEM && GET_CODE (operands[2]) != MEM + && GET_CODE (operands[1]) != CONST_INT) + || GET_RTX_CLASS (code) == 'c'; } /* Attempt to expand a unary operator. Make the expansion closer to the |