Blame 0019-tcg-optimize-simplify-or-xor-r-a-0-cases.patch
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From f69f9bd1a7a095ee153eea5422651780aef178b0 Mon Sep 17 00:00:00 2001
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From: Aurelien Jarno <aurelien@aurel32.net>
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Date: Thu, 6 Sep 2012 16:47:14 +0200
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Subject: [PATCH] tcg/optimize: simplify or/xor r, a, 0 cases
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or/xor r, a, 0 is equivalent to a mov r, a.
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Reviewed-by: Richard Henderson <rth@twiddle.net>
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Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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---
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tcg/optimize.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/tcg/optimize.c b/tcg/optimize.c
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index 63f970d..0db849e 100644
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--- a/tcg/optimize.c
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+++ b/tcg/optimize.c
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@@ -331,6 +331,8 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
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CASE_OP_32_64(sar):
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CASE_OP_32_64(rotl):
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CASE_OP_32_64(rotr):
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+ CASE_OP_32_64(or):
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+ CASE_OP_32_64(xor):
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if (temps[args[1]].state == TCG_TEMP_CONST) {
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/* Proceed with possible constant folding. */
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break;
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--
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1.7.12.1
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