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[Bug target/53974] [4.8 Regression] Nearly all tests fail with ADA.CALENDAR.TIME_ERROR : a-calend.adb:603
- From: "dave.anglin at bell dot net" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 20 Jul 2012 13:28:47 +0000
- Subject: [Bug target/53974] [4.8 Regression] Nearly all tests fail with ADA.CALENDAR.TIME_ERROR : a-calend.adb:603
- Auto-submitted: auto-generated
- References: <bug-53974-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53974
--- Comment #6 from dave.anglin at bell dot net 2012-07-20 13:28:47 UTC ---
On 7/20/2012 8:26 AM, ebotcazou at gcc dot gnu.org wrote:
> SPARC has essentially the same pattern (it's a splitter though) and there was a
> missing early clobber because there is no guarantee that DImode registers all
> start on an even register in 32-bit mode: it's false for DImode arguments.
I believe that the definition of HARD_REGNO_MODE_OK on PA prevents
partially overlapping
DImode registers. See comment comment for HARD_REGNO_MODE_OK . So,
clobbering %R0
can't affect %1.