https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69083
Bug ID: 69083
Summary: ICE at -O3 in 64-bit mode on x86_64-linux-gnu
(verify_gimple failed)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: chengniansun at gmail dot com
Target Milestone: ---
The following code crashes the trunk at -O3 in 64-bit mode on x86_64-linux-gnu.
$: gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151229 (experimental) [trunk revision 231989] (GCC)
$:
$: gcc-trunk -c -w small.c -O3
small.c: In function ‘fn1’:
small.c:3:6: error: conversion of register to a different size
void fn1() {
^~~
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_84 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_85 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_86 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_87 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_88 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_89 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_90 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_91 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_93 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_94 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_95 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_96 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_97 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_98 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_99 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: error: conversion of register to a different size
VIEW_CONVERT_EXPR<<unnamed type>>(_6);
_100 = VIEW_CONVERT_EXPR<<unnamed type>>(_6);
small.c:3:6: internal compiler error: verify_gimple failed
0xb2ff16 verify_gimple_in_cfg(function*, bool)
../../gcc-trunk/gcc/tree-cfg.c:5119
0xa23c37 execute_function_todo
../../gcc-trunk/gcc/passes.c:1958
0xa2452b execute_todo
../../gcc-trunk/gcc/passes.c:2010
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$:
$: cat small.c
int a, b, d, e;
short c, f;
void fn1() {
int j;
for (; e; e++) {
j = 0;
for (; j < 3; j++) {
f = 7 >> b ? a : b;
d |= c == 1 ^ 1 == f;
}
}
}
$:
