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=3Dpowerpc and powerpc64 (gcc/g++ mismatch) > Date: August 30, 2016 at 9:13:15 AM PDT > To: <markmi at dsl-only.net> >=20 >=20 > Comment # 9 on bug 26761 from Hal Finkel > Patch posted for review: https://reviews.llvm.org/D24038 >=20 > You are receiving this mail because: > =E2=80=A2 You reported the bug. =3D=3D=3D 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. =3D=3D=3D 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=3Dpowerpc 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=20 What Removed Added CC hfinkel at anl.gov Component LLVM Codegen Common Code Generator Code =20 Version 3.8 trunk Assignee unassignedclangbugs@nondot.org = unassignedbugs@nondot.org Product clang libraries You are receiving this mail because: =E2=80=A2 You reported the bug.
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