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* [Bug target/47847] New: PowerPC: ICE: -mcpu=8540 -meabi -msdata -fno-common -mfloat-gprs=double
@ 2011-02-22 9:50 sebastian.huber@embedded-brains.de
2011-02-22 16:15 ` [Bug target/47847] " sebastian.huber@embedded-brains.de
0 siblings, 1 reply; 2+ messages in thread
From: sebastian.huber@embedded-brains.de @ 2011-02-22 9:50 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47847
Summary: PowerPC: ICE: -mcpu=8540 -meabi -msdata -fno-common
-mfloat-gprs=double
Product: gcc
Version: 4.5.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: sebastian.huber@embedded-brains.de
Target: powerpc-rtems4.11-gcc
Created attachment 23432
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23432
Sample code.
Using the embedded 64-bit floating-point unit causes an internal compiler error
in combination with the small data area:
powerpc-rtems4.11-gcc -c paranoia.i -mcpu=8540 -meabi -msdata -fno-common
-mfloat-gprs=double -mabi=spe
/home/sh/rtems-sync/c/src/../../testsuites/samples/paranoia/paranoia.c: In
function 'paranoia':
/home/sh/rtems-sync/c/src/../../testsuites/samples/paranoia/paranoia.c:1955:1:
internal compiler error: output_operand: invalid %y value, try using the 'Z'
constraint
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/47847] PowerPC: ICE: -mcpu=8540 -meabi -msdata -fno-common -mfloat-gprs=double
2011-02-22 9:50 [Bug target/47847] New: PowerPC: ICE: -mcpu=8540 -meabi -msdata -fno-common -mfloat-gprs=double sebastian.huber@embedded-brains.de
@ 2011-02-22 16:15 ` sebastian.huber@embedded-brains.de
0 siblings, 0 replies; 2+ messages in thread
From: sebastian.huber@embedded-brains.de @ 2011-02-22 16:15 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47847
--- Comment #1 from Sebastian Huber <sebastian.huber@embedded-brains.de> 2011-02-22 15:55:29 UTC ---
Adding the -mspe (in addition to -mabi=spe) option helped. It seems that only
few combinations of the -mcpu=8520, -mfloat-gprs=*, -mspe, and -mabi=spe flags
are well tested in GCC. The following combinations worked:
(1) -mcpu=8540 -msoft-float
(2) -mcpu=8540 -mspe -mabi=spe -mfloat-gprs=single
(3) -mcpu=8540 -mspe -mabi=spe -mfloat-gprs=double
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-02-22 9:50 [Bug target/47847] New: PowerPC: ICE: -mcpu=8540 -meabi -msdata -fno-common -mfloat-gprs=double sebastian.huber@embedded-brains.de
2011-02-22 16:15 ` [Bug target/47847] " sebastian.huber@embedded-brains.de
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