[Bug c++/36686] New: [4.3 regression] qt-4.3.4 compile failure with message "unable to find a register to spill in class 'R0_REGS'"

[masaki dot chikama at gmail dot com]

gcc-4.3.0 fails to compile with this message when compiling 
qt-4.3.4. gcc-4.1.3 can compile without fail.
They are both natively running on sh4 board.

The message is very similar with Bug #36684. They may have the same root cause.


g++ -c -include .pch/release-shared/QtGui -pipe -fno-exceptions -pthread
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -O2 -g -mieee
-fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC
-DQT_SHARED -DQT_BUILD_GUI_LIB -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS
-DQT_44_API_QSQLQUERY_FINISH -DQT3_SUPPORT -DQT_MOC_COMPAT
-DQT_RASTER_IMAGEENGINE -DQT_NO_STYLE_MAC -DQT_NO_STYLE_WINDOWSVISTA
-DQT_NO_STYLE_WINDOWSXP -DQ_INTERNAL_QAPP_SRC -DQT_NO_DEBUG -DQT_CORE_LIB
-D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++ -I.
-I../../include/QtCore -I../../include/QtCore -I../../include
-I../../include/QtGui -I/usr/include/freetype2 -I../3rdparty/harfbuzz/src
-Idialogs -I.moc/release-shared -I/usr/X11R6/include -I.uic/release-shared -o
.obj/release-shared/qcolordialog.o dialogs/qcolordialog.cpp
In file included from dialogs/qcolordialog.cpp:1717:
dialogs/qcolordialog.cpp: In member function 'virtual QSize
QColorPicker::sizeHint() const':
dialogs/qcolordialog.cpp:834: error: unable to find a register to spill in
class 'R0_REGS'
dialogs/qcolordialog.cpp:834: error: this is the insn:
(insn:HI 25 53 26 2 dialogs/qcolordialog.cpp:833 (set (reg:SI 1 r1 [orig:178
pHeight ] [178])
        (mem/c/i:SI (plus:SI (reg/f:SI 1 r1 [175])
                (reg:SI 12 r12)) [11 pHeight+0 S4 A32])) 172 {movsi_ie}
(expr_list:REG_DEAD (reg/f:SI 1 r1 [175])
        (nil)))
dialogs/qcolordialog.cpp:834: confused by earlier errors, bailing out
make[1]: *** [.obj/release-shared/qcolordialog.o] Error 1
make[1]: Leaving directory
`/builddir/build/BUILD/qt-x11-opensource-src-4.3.4/src/gui'


# /usr/bin/gcc -v
Using built-in specs.
Target: sh4-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla
--enable-bootstrap --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions
--enable-languages=c,c++,objc,obj-c++,java,fortran --enable-java-awt=gtk
--disable-dssi --enable-plugin
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib
--build=sh4-redhat-linux
Thread model: posix
gcc version 4.3.0 20080404 (Red Hat 4.3.0-6.fs1.1) (GCC)


-- 
           Summary: [4.3 regression] qt-4.3.4 compile failure with message
                    "unable to find a register to spill in class 'R0_REGS'"
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: masaki dot chikama at gmail dot com
 GCC build triplet: sh4-redhat-linux
  GCC host triplet: sh4-redhat-linux
GCC target triplet: sh4-redhat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36686