[Bug rtl-optimization/92796] New: [10 Regression] ICE in lra_assign, at lra-assigns.c:1646 on powerpc64le-linux-gnu

[doko at debian dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92796

            Bug ID: 92796
           Summary: [10 Regression] ICE in lra_assign, at
                    lra-assigns.c:1646 on powerpc64le-linux-gnu
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at debian dot org
  Target Milestone: ---

Created attachment 47417
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47417&action=edit
preprocessed source

seen with r278959 on powerpc64le-linux-gnu, trunk:

// during RTL pass: reload
// ../../../src/libquadmath/math/acosq.c: In function 'acosq':
// ../../../src/libquadmath/math/acosq.c:317:1: internal compiler error: in
lra_assign, at lra-assigns.c:1646
//   317 | }
//       | ^
// 0x106652fb lra_assign(bool&)
//      ../../src/gcc/lra-assigns.c:1646
// 0x1065e353 lra(_IO_FILE*)
//      ../../src/gcc/lra.c:2487
// 0x1060345b do_reload
//      ../../src/gcc/ira.c:5518
// 0x1060345b execute
//      ../../src/gcc/ira.c:5704
// Please submit a full bug report,
// with preprocessed source if appropriate.