This sounds like a duplicate of PR 24908 but it's not! Compiling mesa from SPEC CPU2000 with "-m32 -O2 -funroll-loops -g" with a biarch powerpc64-linux compiler results in:
elm3b11% /opt/gcc-nightly/4.1/bin/gcc -c -O2 -funroll-loops -g triangle.c triangle.c: In function lambda_textured_triangle: triangle.c:694: internal compiler error: in dwarf2out_frame_debug_expr, at dwarf2out.c:1585 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. This is for current trunk and the 4.1 branch. The failure happens even with Alan's patch for 24908, although that patch fixes the other failures I had seen in cpu2000 tests. This failure begins with this patch, a fix for PR rtl-optimization/23392: http://gcc.gnu.org/viewcvs?view=rev&rev=107059 r107059 | amodra | 2005-11-16 00:22:15 +0000 (Wed, 16 Nov 2005) The source file is resisting my attempts to minimize it. I don't get this ICE with a powerpc-linux compiler, only a biarch compiler. -- Summary: ICE in dwarf2out for mesa with -O2 -funroll-loops -g Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: janis at gcc dot gnu dot org GCC target triplet: powerpc64-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25194
