[llvm-bugs] [Bug 25416] New: clang hangs when compile a large c file.
via llvm-bugs
llvm-bugs at lists.llvm.org
Thu Nov 5 11:23:25 PST 2015
https://llvm.org/bugs/show_bug.cgi?id=25416
Bug ID: 25416
Summary: clang hangs when compile a large c file.
Product: clang
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangbugs at nondot.org
Reporter: yunlian at google.com
CC: llvm-bugs at lists.llvm.org
Classification: Unclassified
We have a c file like this
It contains a jmp statement for every 4K nop. There are over
4M instructions in the asm. gcc compile it within one second.
Clang hangs.
The command line is
clang iTLB_benchmark_function.c -c -o iTLB_benchmark_function.o
void iTLB_bechmark_function() {
__asm__ (
"1:jmp 1f\n\t"
"nop\n\t"
"nop\n\t"
.
.
.
"1:nop\n\t"
);
}
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