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tcg/optimize: split expression simplification
Split expression simplification in multiple parts so that a given op can appear multiple times. This patch should not change anything. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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@ -322,7 +322,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
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break;
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}
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/* Simplify expression if possible. */
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/* Simplify expression for "op r, a, 0 => mov r, a" cases */
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switch (op) {
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CASE_OP_32_64(add):
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CASE_OP_32_64(sub):
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@ -352,6 +352,12 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
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continue;
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}
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break;
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default:
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break;
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}
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/* Simplify expression for "op r, a, 0 => movi r, 0" cases */
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switch (op) {
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CASE_OP_32_64(mul):
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if ((temps[args[2]].state == TCG_TEMP_CONST
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&& temps[args[2]].val == 0)) {
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@ -362,6 +368,12 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
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continue;
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}
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break;
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default:
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break;
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}
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/* Simplify expression for "op r, a, a => mov r, a" cases */
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switch (op) {
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CASE_OP_32_64(or):
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CASE_OP_32_64(and):
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if (args[1] == args[2]) {
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