| // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s |
| void t1(int len) { |
| __asm__ volatile("" : "=&r"(len), "+&r"(len)); |
| } |
| |
| void t2(unsigned long long t) { |
| __asm__ volatile("" : "+m"(t)); |
| } |
| |
| void t3(unsigned char *src, unsigned long long temp) { |
| __asm__ volatile("" : "+m"(temp), "+r"(src)); |
| } |
| |
| void t4() { |
| unsigned long long a; |
| struct reg { unsigned long long a, b; } b; |
| |
| __asm__ volatile ("":: "m"(a), "m"(b)); |
| } |
| |
| // PR3417 |
| void t5(int i) { |
| asm("nop" : "=r"(i) : "0"(t5)); |
| } |
| |
| // PR3641 |
| void t6(void) { |
| __asm__ volatile("" : : "i" (t6)); |
| } |
| |
| void t7(int a) { |
| __asm__ volatile("T7 NAMED: %[input]" : "+r"(a): [input] "i" (4)); |
| // CHECK: @t7(i32 |
| // CHECK: T7 NAMED: $1 |
| } |
| |
| void t8() { |
| __asm__ volatile("T8 NAMED MODIFIER: %c[input]" :: [input] "i" (4)); |
| // CHECK: @t8() |
| // CHECK: T8 NAMED MODIFIER: ${0:c} |
| } |
| |
| // PR3682 |
| unsigned t9(unsigned int a) { |
| asm("bswap %0 %1" : "+r" (a)); |
| return a; |
| } |
| |
| // PR3908 |
| void t10(int r) { |
| __asm__("PR3908 %[lf] %[xx] %[li] %[r]" : [r] "+r" (r) : [lf] "mx" (0), [li] "mr" (0), [xx] "x" ((double)(0))); |
| |
| // CHECK: @t10( |
| // CHECK:PR3908 $1 $3 $2 $0 |
| } |
| |
| |
| // PR3373 |
| unsigned t11(signed char input) { |
| unsigned output; |
| __asm__("xyz" |
| : "=a" (output) |
| : "0" (input)); |
| return output; |
| } |
| |
| // PR3373 |
| unsigned char t12(unsigned input) { |
| unsigned char output; |
| __asm__("xyz" |
| : "=a" (output) |
| : "0" (input)); |
| return output; |
| } |
| |
| unsigned char t13(unsigned input) { |
| unsigned char output; |
| __asm__("xyz %1" |
| : "=a" (output) |
| : "0" (input)); |
| return output; |
| } |
| |
| struct large { |
| int x[1000]; |
| }; |
| |
| unsigned long t15(int x, struct large *P) { |
| __asm__("xyz " |
| : "=r" (x) |
| : "m" (*P), "0" (x)); |
| return x; |
| } |
| |
| |
| |
| |
| // bitfield destination of an asm. |
| struct S { |
| int a : 4; |
| }; |
| |
| void t14(struct S *P) { |
| __asm__("abc %0" : "=r"(P->a) ); |
| } |
| |
| |
| // PR4938 |
| int t16() { |
| int a,b; |
| asm ( "nop;" |
| :"=%c" (a) |
| : "r" (b) |
| ); |
| return 0; |
| } |
| |
| // PR6475 |
| void t17() { |
| int i; |
| __asm__ ( "nop": "=m"(i)); |
| |
| // CHECK: @t17() |
| // CHECK: call void asm "nop", "=*m, |
| } |
| |
| // <rdar://problem/6841383> |
| int t18(unsigned data) { |
| int a, b; |
| |
| asm("xyz" :"=a"(a), "=d"(b) : "a"(data)); |
| return a + b; |
| // CHECK: t18(i32 |
| // CHECK: = call {{.*}}asm "xyz" |
| // CHECK-NEXT: extractvalue |
| // CHECK-NEXT: extractvalue |
| } |
| |
| |
| // PR6780 |
| int t19(unsigned data) { |
| int a, b; |
| |
| asm("x{abc|def|ghi}z" :"=r"(a): "r"(data)); |
| return a + b; |
| // CHECK: t19(i32 |
| // CHECK: = call {{.*}}asm "x$(abc$|def$|ghi$)z" |
| } |
| |