27 lines
941 B
Diff
27 lines
941 B
Diff
From f08c59ce7dee67a95cf06d9588b4312e7d071788 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 and r, a, 0 cases
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and r, a, 0 is equivalent to a movi r, 0.
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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 | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/tcg/optimize.c b/tcg/optimize.c
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index 0db849e..c12cb2b 100644
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--- a/tcg/optimize.c
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+++ b/tcg/optimize.c
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@@ -360,6 +360,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
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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(and):
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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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