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Diffstat (limited to 'clang/test/Sema/asm.c')
-rw-r--r-- | clang/test/Sema/asm.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/clang/test/Sema/asm.c b/clang/test/Sema/asm.c new file mode 100644 index 0000000..44d83e9 --- /dev/null +++ b/clang/test/Sema/asm.c @@ -0,0 +1,125 @@ +// RUN: %clang_cc1 %s -triple i386-pc-linux-gnu -verify -fsyntax-only + +void f() { + int i; + + asm ("foo\n" : : "a" (i + 2)); + asm ("foo\n" : : "a" (f())); // expected-error {{invalid type 'void' in asm input}} + + asm ("foo\n" : "=a" (f())); // expected-error {{invalid lvalue in asm output}} + asm ("foo\n" : "=a" (i + 2)); // expected-error {{invalid lvalue in asm output}} + + asm ("foo\n" : [symbolic_name] "=a" (i) : "[symbolic_name]" (i)); + asm ("foo\n" : "=a" (i) : "[" (i)); // expected-error {{invalid input constraint '[' in asm}} + asm ("foo\n" : "=a" (i) : "[foo" (i)); // expected-error {{invalid input constraint '[foo' in asm}} + asm ("foo\n" : "=a" (i) : "[symbolic_name]" (i)); // expected-error {{invalid input constraint '[symbolic_name]' in asm}} +} + +void clobbers() { + asm ("nop" : : : "ax", "#ax", "%ax"); + asm ("nop" : : : "eax", "rax", "ah", "al"); + asm ("nop" : : : "0", "%0", "#0"); + asm ("nop" : : : "foo"); // expected-error {{unknown register name 'foo' in asm}} + asm ("nop" : : : "52"); + asm ("nop" : : : "104"); // expected-error {{unknown register name '104' in asm}} + asm ("nop" : : : "-1"); // expected-error {{unknown register name '-1' in asm}} + asm ("nop" : : : "+1"); // expected-error {{unknown register name '+1' in asm}} +} + +// rdar://6094010 +void test3() { + int x; + asm(L"foo" : "=r"(x)); // expected-error {{wide string}} + asm("foo" : L"=r"(x)); // expected-error {{wide string}} +} + +// <rdar://problem/6156893> +void test4(const volatile void *addr) +{ + asm ("nop" : : "r"(*addr)); // expected-error {{invalid type 'const volatile void' in asm input for constraint 'r'}} + asm ("nop" : : "m"(*addr)); + + asm ("nop" : : "r"(test4(addr))); // expected-error {{invalid type 'void' in asm input for constraint 'r'}} + asm ("nop" : : "m"(test4(addr))); // expected-error {{invalid lvalue in asm input for constraint 'm'}} + + asm ("nop" : : "m"(f())); // expected-error {{invalid lvalue in asm input for constraint 'm'}} +} + +// <rdar://problem/6512595> +void test5() { + asm("nop" : : "X" (8)); +} + +// PR3385 +void test6(long i) { + asm("nop" : : "er"(i)); +} + +void asm_string_tests(int i) { + asm("%!"); // simple asm string, %! is not an error. + asm("%!" : ); // expected-error {{invalid % escape in inline assembly string}} + asm("xyz %" : ); // expected-error {{invalid % escape in inline assembly string}} + + asm ("%[somename]" :: [somename] "i"(4)); // ok + asm ("%[somename]" :: "i"(4)); // expected-error {{unknown symbolic operand name in inline assembly string}} + asm ("%[somename" :: "i"(4)); // expected-error {{unterminated symbolic operand name in inline assembly string}} + asm ("%[]" :: "i"(4)); // expected-error {{empty symbolic operand name in inline assembly string}} + + // PR3258 + asm("%9" :: "i"(4)); // expected-error {{invalid operand number in inline asm string}} + asm("%1" : "+r"(i)); // ok, referring to input. +} + +// PR4077 +int test7(unsigned long long b) { + int a; + asm volatile("foo %0 %1" : "=a" (a) :"0" (b)); // expected-error {{input with type 'unsigned long long' matching output with type 'int'}} + return a; +} + +// <rdar://problem/7574870> +asm volatile (""); // expected-warning {{meaningless 'volatile' on asm outside function}} + +// PR3904 +void test8(int i) { + // A number in an input constraint can't point to a read-write constraint. + asm("" : "+r" (i), "=r"(i) : "0" (i)); // expected-error{{invalid input constraint '0' in asm}} +} + +// PR3905 +void test9(int i) { + asm("" : [foo] "=r" (i), "=r"(i) : "1[foo]"(i)); // expected-error{{invalid input constraint '1[foo]' in asm}} + asm("" : [foo] "=r" (i), "=r"(i) : "[foo]1"(i)); // expected-error{{invalid input constraint '[foo]1' in asm}} +} + +register int g asm("dx"); // expected-error{{global register variables are not supported}} + +void test10(void){ + static int g asm ("g_asm") = 0; + extern int gg asm ("gg_asm"); + __private_extern__ int ggg asm ("ggg_asm"); + + int a asm ("a_asm"); // expected-warning{{ignored asm label 'a_asm' on automatic variable}} + auto int aa asm ("aa_asm"); // expected-warning{{ignored asm label 'aa_asm' on automatic variable}} + + register int r asm ("cx"); + register int rr asm ("rr_asm"); // expected-error{{unknown register name 'rr_asm' in asm}} +} + +// This is just an assert because of the boolean conversion. +// Feel free to change the assembly to something sensible if it causes a problem. +// rdar://problem/9414925 +void test11(void) { + _Bool b; + asm volatile ("movb %%gs:%P2,%b0" : "=q"(b) : "0"(0), "i"(5L)); +} + +void test12(void) { + register int cc __asm ("cc"); // expected-error{{unknown register name 'cc' in asm}} +} + +// PR10223 +void test13(void) { + void *esp; + __asm__ volatile ("mov %%esp, %o" : "=r"(esp) : : ); // expected-error {{invalid % escape in inline assembly string}} +} |