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* [Bug rtl-optimization/33482] New: Invalid operands for pshifts with -O1
@ 2007-09-18 20:54 dwarak dot rajagopal at amd dot com
2007-09-19 6:20 ` [Bug target/33482] " ubizjak at gmail dot com
0 siblings, 1 reply; 2+ messages in thread
From: dwarak dot rajagopal at amd dot com @ 2007-09-18 20:54 UTC (permalink / raw)
To: gcc-bugs
Testcase (test1.c):
#include <emmintrin.h>
__m128i test_fn1(__m128i x)
{
__m128i y;
return _mm_srl_epi64(x,_mm_set_epi32(0,0,31,31));
}
gcc -O1 -c test1.c
/tmp/ccBc8BO7.s: Assembler messages:
/tmp/ccBc8BO7.s:7: Error: suffix or operands invalid for `psrlq'
gcc -O1 -S test1.s
test_fn1:
.LFB501:
psrlq $133143986207, %xmm0
ret
As we can see that the operands are invalid for psrlq. Similar errors occur for
other pshifts instructions such as psra*, psrl*, and psll*.
A patch to fix this issue is as follows, basically having the right output
modifier for these insns in sse.md.
diff -purwN gcc-4.2.2-RC-20070909/gcc/config/i386/sse.md
gcc-4.2.2-RC-20070909-fix/gcc/config/i386/sse.md
--- gcc-4.2.2-RC-20070909/gcc/config/i386/sse.md 2007-09-01
10:28:30.000000000 -0500
+++ gcc-4.2.2-RC-20070909-fix/gcc/config/i386/sse.md 2007-09-17
16:33:26.790117000 -0500
@@ -2724,7 +2724,7 @@
[(set (match_operand:SSEMODE24 0 "register_operand" "=x")
(ashiftrt:SSEMODE24
(match_operand:SSEMODE24 1 "register_operand" "0")
- (match_operand:TI 2 "nonmemory_operand" "xn")))]
+ (match_operand:TI 2 "nonmemory_operand" "xN")))]
"TARGET_SSE2"
"psra<ssevecsize>\t{%2, %0|%0, %2}"
[(set_attr "type" "sseishft")
@@ -2734,7 +2734,7 @@
[(set (match_operand:SSEMODE248 0 "register_operand" "=x")
(lshiftrt:SSEMODE248
(match_operand:SSEMODE248 1 "register_operand" "0")
- (match_operand:TI 2 "nonmemory_operand" "xn")))]
+ (match_operand:TI 2 "nonmemory_operand" "xN")))]
"TARGET_SSE2"
"psrl<ssevecsize>\t{%2, %0|%0, %2}"
[(set_attr "type" "sseishft")
@@ -2744,7 +2744,7 @@
[(set (match_operand:SSEMODE248 0 "register_operand" "=x")
(ashift:SSEMODE248
(match_operand:SSEMODE248 1 "register_operand" "0")
- (match_operand:TI 2 "nonmemory_operand" "xn")))]
+ (match_operand:TI 2 "nonmemory_operand" "xN")))]
"TARGET_SSE2"
"psll<ssevecsize>\t{%2, %0|%0, %2}"
[(set_attr "type" "sseishft")
Is this ok?
- Dwarak
--
Summary: Invalid operands for pshifts with -O1
Product: gcc
Version: 4.2.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dwarak dot rajagopal at amd dot com
GCC build triplet: i686-unknown-linux-gnu
GCC host triplet: i686-unknown-linux-gnu
GCC target triplet: i686-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33482
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/33482] Invalid operands for pshifts with -O1
2007-09-18 20:54 [Bug rtl-optimization/33482] New: Invalid operands for pshifts with -O1 dwarak dot rajagopal at amd dot com
@ 2007-09-19 6:20 ` ubizjak at gmail dot com
0 siblings, 0 replies; 2+ messages in thread
From: ubizjak at gmail dot com @ 2007-09-19 6:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from ubizjak at gmail dot com 2007-09-19 06:20 -------
I'll backport http://gcc.gnu.org/viewcvs?view=rev&revision=128328 from PR
target/33369 to fix this issue.
*** This bug has been marked as a duplicate of 33369 ***
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33482
^ permalink raw reply [flat|nested] 2+ messages in thread
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2007-09-18 20:54 [Bug rtl-optimization/33482] New: Invalid operands for pshifts with -O1 dwarak dot rajagopal at amd dot com
2007-09-19 6:20 ` [Bug target/33482] " ubizjak at gmail dot com
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