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* [Bug target/59458] New: alternative 13 in *movsf_internal is mishandled
@ 2013-12-10 21:06 hjl.tools at gmail dot com
2013-12-10 23:21 ` [Bug target/59458] " hjl at gcc dot gnu.org
2013-12-10 23:29 ` hjl.tools at gmail dot com
0 siblings, 2 replies; 3+ messages in thread
From: hjl.tools at gmail dot com @ 2013-12-10 21:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59458
Bug ID: 59458
Summary: alternative 13 in *movsf_internal is mishandled
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: ubizjak at gmail dot com
We have
(define_insn "*movsf_internal"
[(set (match_operand:SF 0 "nonimmediate_operand"
"=Yf*f,m ,Yf*f,?r ,?m,v,v,v,m,?r,?Yi,!*y,!*y,!m,!r ,!*Ym")
(match_operand:SF 1 "general_operand"
"Yf*fm,Yf*f,G ,rmF,rF,C,v,m,v,Yj,r ,*y ,m ,*y,*Yn,r"))]
alternative 13 is MMXMOV instruction to store "*y" to "!m". But
alternative 13 gets the default mode, SF. But MMXMOV is
case TYPE_MMXMOV:
switch (get_attr_mode (insn))
{
case MODE_DI:
return "movq\t{%1, %0|%0, %1}";
case MODE_SI:
return "movd\t{%1, %0|%0, %1}";
default:
gcc_unreachable ();
}
MODE_SF gets gcc_unreachable. This patch:
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 7138868..aa2664f 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -3126,7 +3140,7 @@
(const_string "1")
(const_string "*")))
(set (attr "mode")
- (cond [(eq_attr "alternative" "3,4,9,10,14,15")
+ (cond [(eq_attr "alternative" "3,4,9,10,13,14,15")
(const_string "SI")
(eq_attr "alternative" "11")
(const_string "DI")
sets mode to SI for alternative 13.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-12-10 21:06 [Bug target/59458] New: alternative 13 in *movsf_internal is mishandled hjl.tools at gmail dot com
2013-12-10 23:21 ` [Bug target/59458] " hjl at gcc dot gnu.org
2013-12-10 23:29 ` hjl.tools at gmail dot com
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