------- Comment #26 from dave at hiauly1 dot hia dot nrc dot ca 2010-07-18
20:43 -------
Subject: Re: [4.6 regression] Revision 162270 failed to bootstrap
Doing a non bootstrap build, I see the following new fail:
FAIL: gcc.c-torture/execute/950605-1.c execution, -O1
f:
.PROC
.CALLINFO FRAME=128,CALLS,SAVE_RP,ENTRY_GR=3
.ENTRY
std %r2,-16(%r30)
ldi 255,%r28
cmpb,= %r28,%r26,L$0003
The least significant byte of the argument passed in register %r26
is no longer extracted, causing compare to fail. The is what I see
with gcc-4.4:
f:
.PROC
.CALLINFO FRAME=128,CALLS,SAVE_RP,ENTRY_GR=3
.ENTRY
std %r2,-16(%r30)
extrd,u %r26,63,8,%r26
ldi 255,%r28
cmpb,= %r28,%r26,L$0004
Dave
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44970
