https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82928
Bug ID: 82928
Summary: glibc test-tgmath3 ICE on powerpc64le
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: amodra at gmail dot com
Target Milestone: ---
Created attachment 42571
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42571&action=edit
somewhat reduced testcase
Seen with current glibc "make check", gcc 20171109
during RTL pass: expand
/home/amodra/build/glibc/math/test-tgmath3.c: In function 'test_log10_17':
/home/amodra/build/glibc/math/test-tgmath3.c:150331:23: internal compiler
error: in as_a, at machmode.h:345
vol_var___CFLOAT128 = log10 (vol_var___CFLOAT128);
0x1050cc0f scalar_mode as_a<scalar_mode>(machine_mode)
/home/amodra/src/gcc/gcc/machmode.h:345
0x1050cc0f convert_mode_scalar
/home/amodra/src/gcc/gcc/expr.c:280
0x1050cc0f convert_move(rtx_def*, rtx_def*, int)
/home/amodra/src/gcc/gcc/expr.c:271
0x105156c7 store_expr_with_bounds(tree_node*, rtx_def*, int, bool, bool,
tree_node*)
/home/amodra/src/gcc/gcc/expr.c:5631
0x105172c3 expand_assignment(tree_node*, tree_node*, bool)
/home/amodra/src/gcc/gcc/expr.c:5322
0x103879af expand_gimple_stmt_1
/home/amodra/src/gcc/gcc/cfgexpand.c:3675
0x103879af expand_gimple_stmt
/home/amodra/src/gcc/gcc/cfgexpand.c:3773
0x1038ba83 expand_gimple_basic_block
/home/amodra/src/gcc/gcc/cfgexpand.c:5774
0x10391b67 execute
/home/amodra/src/gcc/gcc/cfgexpand.c:6375
gcc -c -O1 -mcpu=power8 to reproduce with attached testcase
