Date: Tue, 30 Aug 2016 10:23:11 -0700 From: Mark Millard <markmi@dsl-only.net> To: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org> Subject: Re: From llvm: Fwd: [Bug 26761] clang 3.8.0 messes up __builtin_dwarf_cfa (), at least for TARGET_ARCH=powerpc and powerpc64 (gcc/g++ mismatch) [patch under review] Message-ID: <1FDE13A7-93C2-48E9-B1D0-84EDFAEE419D@dsl-only.net> In-Reply-To: <956E5C77-9B86-46D3-8935-7B4BF3203236@dsl-only.net> References: <bug-26761-7604-YTM0iUoPnV@http.llvm.org/bugs/> <956E5C77-9B86-46D3-8935-7B4BF3203236@dsl-only.net>
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[Top post of new status.] My original analysis of the bad powerpc and powerpc64 code generated by clang 3.8.0 for __builtin_dwarf_cfa() has been confirmed and a patch is out for review (likely targeting trunk). Begin forwarded message: > From: bugzilla-daemon at llvm.org > Subject: [Bug 26761] clang 3.8.0 messes up __builtin_dwarf_cfa (), at least for TARGET_ARCH=powerpc and powerpc64 (gcc/g++ mismatch) > Date: August 30, 2016 at 9:13:15 AM PDT > To: <markmi at dsl-only.net> > > > Comment # 9 on bug 26761 from Hal Finkel > Patch posted for review: https://reviews.llvm.org/D24038 > > You are receiving this mail because: > • You reported the bug. === Mark Millard markmi at dsl-only.net On 2016-Aug-29, at 11:46 PM, Mark Millard <markmi at dsl-only.net> wrote: It looks like Hal Finkel looked at llvm bug 26761 enough to reclassify it from llvm Codegen for clang 3.8 to "Common Code Generator Code" for libraries on trunk. (Not a claim of a fix, just a reclassification.) This is one of the bugs listed in "[Bug 25780] [META] Using Clang as the FreeBSD/ppc system compiler" as known to be blocking the use of clang for powerpc. With the recent addition of -mlongcall [llvm bug 19098 is now listed as fixed on trunk], this may hint that some clang related work is overlapping with what FreeBSD happens to need for powerpc64 and/or powerpc. As no comments were added I'm not sure if it was looked at enough for my original analysis of the code generated to have any independent verification yet. Some of my original submittals got a cross check when I submitted them and the comments reflect the process in such cases. This one did not get such activity at the time or since. === Mark Millard markmi at dsl-only.net Begin forwarded message: From: bugzilla-daemon at llvm.org Subject: [Bug 26761] clang 3.8.0 messes up __builtin_dwarf_cfa (), at least for TARGET_ARCH=powerpc and powerpc64 (gcc/g++ mismatch) Date: August 29, 2016 at 7:50:28 PM PDT To: <markmi at dsl-only.net> Hal Finkel changed bug 26761 What Removed Added CC hfinkel at anl.gov Component LLVM Codegen Common Code Generator Code Version 3.8 trunk Assignee unassignedclangbugs@nondot.org unassignedbugs@nondot.org Product clang libraries You are receiving this mail because: • You reported the bug.
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