https://llvm.org/bugs/show_bug.cgi?id=24499
Bug ID: 24499
Summary: inline assembler causes an assertion
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 14745
--> https://llvm.org/bugs/attachment.cgi?id=14745&action=edit
Assertion log
=============SMALL REPRODUCER==================
void test4()
{
int t0 = 15;
int r0, r1;
__asm ("mov %2, %%eax\n\t"
"add %%eax, %%eax\n\t"
"mov %%eax, %2\n\t"
"mov $42, %0"
: "=a" (r0), "=m" (r1)
: "1" (t0), "1" (t0));
}
==============================================
Clang fails with an assertion, seems that llvm::InlineAsm is guilty in this
case. The problem is 'illegal type for constraints'
gcc in this case fails with:
error: inconsistent operand constraints in an ‘asm’
Assertion log is attached.
----------------
Intel Software Engineer
Andrey Kuleshov
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