https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105979
Bug ID: 105979
Summary: ICE in change_stack, at reg-stack.cc:2660
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started with r9, at -O1, with file g++.dg/ext/pr84828.C :
$ gcc-13-20220612 -c pr84828.C -O1 -mfpmath=387 -fno-tree-loop-optimize
pr84828.C: In function 'void foo(float, double)':
pr84828.C:10:7: error: output constraint 0 must specify a single register
10 | asm volatile ("" : "+f" (c)); // { dg-error "must specify a
single register" }
| ^~~
during RTL pass: stack
pr84828.C:13:1: internal compiler error: in change_stack, at reg-stack.cc:2660
13 | }
| ^
0x103d37c change_stack
../../gcc/reg-stack.cc:2660
0x1041a57 compensate_edge
../../gcc/reg-stack.cc:2941
0x1041a57 compensate_edges
../../gcc/reg-stack.cc:2972
0x1041a57 convert_regs
../../gcc/reg-stack.cc:3276
0x1041a57 reg_to_stack
../../gcc/reg-stack.cc:3385
0x1041a57 rest_of_handle_stack_regs
../../gcc/reg-stack.cc:3441
0x1041a57 execute
../../gcc/reg-stack.cc:3473
