[compiler-rt] r290540 - [inline-asm]No error for conflict between inputs\outputs and clobber list

[Marina Yatsina via llvm-commits]

Author: myatsina
Date: Mon Dec 26 06:24:49 2016
New Revision: 290540

URL: http://llvm.org/viewvc/llvm-project?rev=290540&view=rev
Log:
[inline-asm]No error for conflict between inputs\outputs and clobber list

Updated test according to commit 290539:

According to extended asm syntax, a case where the clobber list includes a variable from the inputs or outputs should be an error - conflict.
for example:

const long double a = 0.0;
int main()
{

char b;
double t1 = a;
__asm__ ("fucompp": "=a" (b) : "u" (t1), "t" (t1) : "cc", "st", "st(1)");

return 0;
}

This should conflict with the output - t1 which is st, and st which is st aswell.
The patch fixes it.

Commit on behald of Ziv Izhar.

Differential Revision: https://reviews.llvm.org/D15075


Modified:
    compiler-rt/trunk/lib/asan/tests/asan_asm_test.cc

Modified: compiler-rt/trunk/lib/asan/tests/asan_asm_test.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/asan/tests/asan_asm_test.cc?rev=290540&r1=290539&r2=290540&view=diff
==============================================================================
--- compiler-rt/trunk/lib/asan/tests/asan_asm_test.cc (original)
+++ compiler-rt/trunk/lib/asan/tests/asan_asm_test.cc Mon Dec 26 06:24:49 2016
@@ -62,7 +62,7 @@ template<> Type asm_read<Type>(Type *ptr
     __asm__("rep " Movs " \n\t"                                                \
             :                                                                  \
             : "D"(dst), "S"(src), "c"(size)                                    \
-            : "rsi", "rdi", "rcx", "memory");                                  \
+            : "memory");                                  \
   }
 
 DECLARE_ASM_WRITE(U8, "8", "movq", "r");
@@ -104,7 +104,7 @@ template<> Type asm_read<Type>(Type *ptr
     __asm__("rep " Movs " \n\t"                                                \
             :                                                                  \
             : "D"(dst), "S"(src), "c"(size)                                    \
-            : "esi", "edi", "ecx", "memory");                                  \
+            : "memory");                                  \
   }
 
 } // End of anonymous namespace