--- Additional Comments From uros at kss-loka dot si 2005-01-14 13:08
---
It looks that the problem with FP compares forcing constant into wrong register
part of this bug is solved. However, register allocator can still be confused
when a variable is initialized to constant value:
grep
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-01-14
13:16 ---
(In reply to comment #8)
It looks that the problem with FP compares forcing constant into wrong
register
part of this bug is solved. However, register allocator can still be confused
when a variable is
--- Additional Comments From rth at gcc dot gnu dot org 2005-01-14 00:55
---
Fixed.
--
What|Removed |Added
Status|ASSIGNED|RESOLVED
--
What|Removed |Added
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19009
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What|Removed |Added
AssignedTo|unassigned at gcc dot gnu |rth at gcc dot gnu dot org
|dot org |
Status|NEW
--- Additional Comments From uros at kss-loka dot si 2005-01-07 11:29
---
This bugreport shows similar problem for x87 code as PR 19252 shoes for SSE
code. The cause of both probems is described in
http://gcc.gnu.org/ml/gcc-patches/2005-01/msg00394.html
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What|Removed |Added
Severity|normal |minor
Status|WAITING |NEW
Ever Confirmed||1
--- Additional Comments From uros at kss-loka dot si 2004-12-16 13:50
---
-finline-functions is needed to trigger the bug with -O2.
The attached testcase should be compiled with '-O2 -march=pentium4 -mfpmath=387
-ffast-math -D__NO_MATH_INLINES -finline-functions' to get:
...
--- Additional Comments From uros at kss-loka dot si 2004-12-16 14:35
---
Another candidate for TARGET_SSE_MATH cleanup...
(insn 21 20 22 0 (set (reg:CCFP 17 flags)
(compare:CCFP (reg/v:DF 60 [ mod ])
(reg:DF 70))) 24 {*cmpfp_i_sse} (nil)
(nil))
--
--- Additional Comments From uros at kss-loka dot si 2004-12-16 06:28
---
(In reply to comment #1)
I'm trying to make a testcase out of PovRay sources that trigger this behaviour.
I think that *movdf_nointeger is somehow confused and chooses SSE register to
load constant. After that,
--- Additional Comments From bangerth at dealii dot org 2004-12-15 14:13
---
Uros, do you have a testcase?
--
What|Removed |Added
Status|UNCONFIRMED
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