[Bug target/93877] New: [9 10 Regression] [SH] webkit2gtk fails to build with "internal compiler error: in extract_constrain_insn, at recog.c:2211"

[glaubitz at physik dot fu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93877

            Bug ID: 93877
           Summary: [9 10 Regression] [SH] webkit2gtk fails to build with
                    "internal compiler error: in extract_constrain_insn,
                    at recog.c:2211"
           Product: gcc
           Version: 9.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: glaubitz at physik dot fu-berlin.de
                CC: jrtc27 at jrtc27 dot com, kkojima at gcc dot gnu.org,
                    olegendo at gcc dot gnu.org
  Target Milestone: ---
            Target: sh*-*-*

As mentioned in PR91913, the issue reported there for ARM affects SH as well
when building webkit2gtk on Debian sh4:

(sid-sh4-sbuild)root@nofan:/build/webkit2gtk-huItPy/webkit2gtk-2.26.4/build#
g++-9 -DANGLE_ENABLE_ESSL -DANGLE_ENABLE_GLSL -DBUILDING_GTK__=1
-DBUILDING_WITH_CMAKE=1 -DEGL_EGL_PROTOTYPES=0
-DGETTEXT_PACKAGE=\"WebKit2GTK-4.0\" -DGL_GLES_PROTOTYPES=0 -DHAVE_CONFIG_H=1
-DJSC_GLIB_API_ENABLED -DLIBANGLE_IMPLEMENTATION
-DWEBKITGTK_API_VERSION_STRING=\"4.0\" -I../Source/ThirdParty/ANGLE/include
-I../Source/ThirdParty/ANGLE/include/KHR -I../Source/ThirdParty/ANGLE/src
-I../Source/ThirdParty/ANGLE/src/common/third_party/base
-fdiagnostics-color=always -Wextra -Wall -Wno-expansion-to-defined -Wno-psabi
-Wno-noexcept-type -Wno-maybe-uninitialized -Wwrite-strings -Wundef
-Wpointer-arith -Wmissing-format-attribute -Wformat-security -Wcast-align -g1
-O2 -fdebug-prefix-map=/build/webkit2gtk-huItPy/=.
-specs=/usr/share/dpkg/pie-compile.specs -fstack-protector-strong -Wformat
-Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -Wall -mlra -DNDEBUG
-DG_DISABLE_CAST_CHECKS -fno-strict-aliasing -fno-exceptions -fno-rtti -fPIC  
-Wno-cast-align -Wno-suggest-attribute=format -Wno-type-limits -Wno-undef
-Wno-unused-parameter -std=c++17 -MD -MT
Source/ThirdParty/ANGLE/CMakeFiles/ANGLE.dir/src/compiler/translator/IntermNode.cpp.o
-MF
Source/ThirdParty/ANGLE/CMakeFiles/ANGLE.dir/src/compiler/translator/IntermNode.cpp.o.d
-o
Source/ThirdParty/ANGLE/CMakeFiles/ANGLE.dir/src/compiler/translator/IntermNode.cpp.o
-c ../Source/ThirdParty/ANGLE/src/compiler/translator/IntermNode.cpp
../Source/ThirdParty/ANGLE/src/compiler/translator/IntermNode.cpp: In static
member function 'static sh::TConstantUnion*
sh::TIntermConstantUnion::FoldAggregateBuiltIn(sh::TIntermAggregate*,
sh::TDiagnostics*)':
../Source/ThirdParty/ANGLE/src/compiler/translator/IntermNode.cpp:3747:1:
error: insn does not satisfy its constraints:
 3747 | }
      | ^
(insn 9655 9654 3155 385 (parallel [
            (set (reg:SF 66 fr2 [orig:645 _696 ] [645])
                (reg:SF 0 r0 [3233]))
            (use (reg:SI 154 fpscr0))
            (clobber (scratch:SI))
        ]) 214 {movsf_ie}
     (expr_list:REG_DEAD (reg:SF 0 r0 [3233])
        (nil)))
during RTL pass: cprop_hardreg
../Source/ThirdParty/ANGLE/src/compiler/translator/IntermNode.cpp:3747:1:
internal compiler error: in extract_constrain_insn, at recog.c:2211