Thank you for the bug report. I've confirmed this with gcc-
linaro-4.6-2011.12 on ARM:
michaelh@ursa3:~/linaro/bugs$
/tools/toolchains/arch/armv7l/gcc-linaro-4.6-2011.12-armv7l-natty-cbuild21
2-tcpanda03-cortexa9r1/bin/gcc -c -g -O2 TextDiagnosticPrinter2.ii
TextDiagnosticPrinter2.ii: In member function 'void
clang::TextDiagnosticPrinter::EmitCaretDiagnostic(clang::SourceLocation,
clang::CharSourceRange*, unsigned int, const clang::SourceManager&, const
clang::FixItHint*, unsigned int, unsigned int, unsigned int, unsigned int,
unsigned int)':
TextDiagnosticPrinter2.ii:29848:1: error: unable to find a register to spill in
class 'LO_REGS'
TextDiagnosticPrinter2.ii:29848:1: error: this is the insn:
(insn 137 150 138 3 (parallel [
(set (reg/v:SI 208 [ Suppressed ])
(and:SI (ltu:SI (reg/v:SI 1356 [ OnMacroInst ])
(reg/v:SI 1358 [ MacroSkipEnd ]))
(geu:SI (reg/v:SI 1356 [ OnMacroInst ])
(reg/v:SI 1357 [ MacroSkipStart ]))))
(clobber (reg:CC 24 cc))
]) TextDiagnosticPrinter2.ii:29667 282 {*and_scc_scc_nodom}
(expr_list:REG_UNUSED (reg:CC 24 cc)
(nil)))
TextDiagnosticPrinter2.ii:29848: confused by earlier errors, bailing out
The work-around is to compile at -O1. The fault does not exist in
gcc-4.5.3, gcc-4.6.2, or gcc-4.7~svn182152. The fault was introduced in
the 2011.09 release.
I've set it to medium priority as it is a ftbfs and a work-around
exists.
** Changed in: gcc-linaro
Status: New => Confirmed
** Changed in: gcc-linaro
Status: Confirmed => Triaged
** Changed in: gcc-linaro
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/903178
Title:
[4.6 regression/armhf] ICE, unable to find a register to spill in
class 'LO_REGS'
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