https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113720
Bug ID: 113720
Summary: [14 Regression] internal compiler error: in
extract_insn, at recog.cc:2812 targeting
alpha-linux-gnu
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
Created attachment 57291
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57291&action=edit
preprocessed source
[There is PR113615, but I was asked to file a separate issue]
works with 20240129, fails with 20240201 on alpha-linux-gnu
// gcc version 14.0.1 20240131 (experimental) [master r14-8680-g2f14c0dbb78]
(Debian 14-20240201-3)
//
// ../../../../../src/libstdc++-v3/src/c++17/floating_to_chars.cc: In function
'std::to_chars_result std::__floating_to_chars_shortest(char*, char*, T,
chars_format) [with T = double]':
// ../../../../../src/libstdc++-v3/src/c++17/floating_to_chars.cc:1306:3:
error: unrecognizable insn:
// 1306 | }
// | ^
// (insn 712 711 713 22 (set (reg:DI 686 [ highparttmp_857 ])
// (truncate:DI (lshiftrt:TI (mult:TI (zero_extend:TI (subreg:DI
(reg:TI 223 [ _319 ]) 0))
// (subreg:DI (reg:TI 225 [ _321 ]) 0))
// (const_int 64 [0x40]))))
"../../../../../src/libstdc++-v3/src/c++17/ryu/d2s_intrinsics.h":254:27 -1
// (nil))
// during RTL pass: vregs
// ../../../../../src/libstdc++-v3/src/c++17/floating_to_chars.cc:1306:3:
internal compiler error: in extract_insn, at recog.cc:2812
// 0x7b030c _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
// ../../src/gcc/rtl-error.cc:108
// 0x7b0328 _fatal_insn_not_found(rtx_def const*, char const*, int, char
const*)
// ../../src/gcc/rtl-error.cc:116
// 0x7aed6e extract_insn(rtx_insn*)
// ../../src/gcc/recog.cc:2812
// 0xe44cd5 instantiate_virtual_regs_in_insn
// ../../src/gcc/function.cc:1611
// 0xe44cd5 instantiate_virtual_regs
// ../../src/gcc/function.cc:1994
// 0xe44cd5 execute
// ../../src/gcc/function.cc:2041
// Please submit a full bug report, with preprocessed source (by using
-freport-bug).
// Please include the complete backtrace with any bug report.
