Date: Fri, 3 Feb 2012 23:32:23 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r230969 - stable/9/contrib/llvm/lib/Target/X86 Message-ID: <201202032332.q13NWN3J009478@svn.freebsd.org>
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Author: dim Date: Fri Feb 3 23:32:22 2012 New Revision: 230969 URL: http://svn.freebsd.org/changeset/base/230969 Log: MFC r230393: Pull in r148240 from upstream llvm trunk: Make sure the non-SSE lowering for fences correctly clobbers EFLAGS. PR11768. In particular, this fixes segfaults during the build of devel/icu on i386. The __sync_synchronize() builtin used for implementing icu's internal barrier could lead to incorrect behaviour. Modified: stable/9/contrib/llvm/lib/Target/X86/X86InstrCompiler.td Directory Properties: stable/9/contrib/llvm/ (props changed) Modified: stable/9/contrib/llvm/lib/Target/X86/X86InstrCompiler.td ============================================================================== --- stable/9/contrib/llvm/lib/Target/X86/X86InstrCompiler.td Fri Feb 3 23:27:07 2012 (r230968) +++ stable/9/contrib/llvm/lib/Target/X86/X86InstrCompiler.td Fri Feb 3 23:32:22 2012 (r230969) @@ -533,7 +533,7 @@ def ATOMSWAP6432 : I<0, Pseudo, (outs GR // Memory barriers // TODO: Get this to fold the constant into the instruction. -let isCodeGenOnly = 1 in +let isCodeGenOnly = 1, Defs = [EFLAGS] in def OR32mrLocked : I<0x09, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$zero), "lock\n\t" "or{l}\t{$zero, $dst|$dst, $zero}",
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