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authorRichard Henderson <rth@twiddle.net>2013-01-29 13:38:43 -0800
committerRichard Henderson <rth@twiddle.net>2013-02-19 23:05:18 -0800
commit436ff2d227588d42970c4f0ed1cdfcb87c872fba (patch)
tree490749eb20535f821b9937d8fb25d7a38faad2a9 /target-i386/cc_helper.c
parent321c535105a182501b888f095f7ec4dbb5f3f6ae (diff)
downloadqemu-arm-436ff2d227588d42970c4f0ed1cdfcb87c872fba.tar.gz
target-i386: Add CC_OP_CLR
Special case xor with self. We need not even store the known zero into cc_src. Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-i386/cc_helper.c')
-rw-r--r--target-i386/cc_helper.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/target-i386/cc_helper.c b/target-i386/cc_helper.c
index 6cf57a76b3..9daa1a06b8 100644
--- a/target-i386/cc_helper.c
+++ b/target-i386/cc_helper.c
@@ -102,6 +102,8 @@ target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1,
case CC_OP_EFLAGS:
return src1;
+ case CC_OP_CLR:
+ return CC_Z;
case CC_OP_MULB:
return compute_all_mulb(dst, src1);
@@ -228,6 +230,7 @@ target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1,
case CC_OP_LOGICW:
case CC_OP_LOGICL:
case CC_OP_LOGICQ:
+ case CC_OP_CLR:
return 0;
case CC_OP_EFLAGS: