https://bugs.llvm.org/show_bug.cgi?id=42912
Bug ID: 42912
Summary: riscv inline assembly compilation failure
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C
Assignee: unassignedclangb...@nondot.org
Reporter: ronen.h...@wdc.com
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
riscv inline assembly input operand failure for the following code:
#define M_SET_ENTRY(func) asm volatile ("la x31, %0" : : "i"(func) : );
void my_func(void)
{
/*
* some code here
*/
}
void some_func(void)
{
/*
* some code here
*/
M_SET_ENTRY(my_func);
}
The failure I get:
./clang -o test.o -c -Os -ffunction-sections -fdata-sections -Wall -c
-fno-builtin-printf -include sys/cdefs.h -mabi=ilp32 -g3 -gdwarf-2
-march=rv32imac --gcc-toolchain=/home/work/bld-rv-linux-32/
--sysroot=/home/work/bld-rv-linux-32/riscv32-unknown-elf/ test.c
test.c:105:4: error: invalid operand in inline asm: 'la x31, $0'
M_SET_ENTRY(my_func);
^
test.c:91:41: note: expanded from macro 'M_SET_ENTRY'
#define M_SET_ENTRY(func) asm volatile ("la x31, %0" : : "i"(func) : );
^
test.c:105:4: error: unknown operand
test.c:91:41: note: expanded from macro 'M_SET_ENTRY'
#define M_SET_ENTRY(func) asm volatile ("la x31, %0" : : "i"(func) : );
^
<inline asm>:1:10: note: instantiated into assembly here
la x31,
^
2 errors generated.
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