https://bugs.llvm.org/show_bug.cgi?id=32906
Bug ID: 32906
Summary: fatal error with "-mcmodel=medium -fpic" for global
pointers
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: elad2.co...@intel.com
CC: llvm-bugs@lists.llvm.org
Created attachment 18399
--> https://bugs.llvm.org/attachment.cgi?id=18399&action=edit
Generated .ll file (clang tst.c -S -emit-llvm -mcmodel=medium -fpic
The following code crashes when compiling with top-of-trunc clang using
"-mcmodel=medium -fpic":
> cat tst.c
void foo(int *);
int *x;
int main() {
foo(x);
return 0;
}
> clang tst.c -c -mcmodel=medium -fpic
fatal error: error in backend: 32 bit reloc applied to a field with a different
size
With gcc this code compiles successfully.
The error is given during assembly:
> clang tst.c -S -mcmodel=medium -fpic
> clang tst.s
tst.s:19:2: error: 32 bit reloc applied to a field with a different size
movabsq $x@GOTPCREL, %rax
^
Generated .ll and .s files are attached.
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