55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
// RUN: %clang_cc1 -triple arm64-apple-darwin -fsyntax-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
|
|
|
|
typedef unsigned char uint8_t;
|
|
|
|
uint8_t constraint_r(uint8_t *addr) {
|
|
uint8_t byte;
|
|
|
|
__asm__ volatile("ldrb %0, [%1]" : "=r" (byte) : "r" (addr) : "memory");
|
|
// CHECK: warning: value size does not match register size specified by the constraint and modifier
|
|
// CHECK: note: use constraint modifier "w"
|
|
// CHECK: fix-it:{{.*}}:{8:26-8:28}:"%w0"
|
|
|
|
return byte;
|
|
}
|
|
|
|
uint8_t constraint_r_symbolic(uint8_t *addr) {
|
|
uint8_t byte;
|
|
|
|
__asm__ volatile("ldrb %[s0], [%[s1]]" : [s0] "=r" (byte) : [s1] "r" (addr) : "memory");
|
|
// CHECK: warning: value size does not match register size specified by the constraint and modifier
|
|
// CHECK: note: use constraint modifier "w"
|
|
// CHECK: fix-it:{{.*}}:{19:26-19:31}:"%w[s0]"
|
|
|
|
return byte;
|
|
}
|
|
|
|
#define PERCENT "%"
|
|
|
|
uint8_t constraint_r_symbolic_macro(uint8_t *addr) {
|
|
uint8_t byte;
|
|
|
|
__asm__ volatile("ldrb "PERCENT"[s0], [%[s1]]" : [s0] "=r" (byte) : [s1] "r" (addr) : "memory");
|
|
// CHECK: warning: value size does not match register size specified by the constraint and modifier
|
|
// CHECK: note: use constraint modifier "w"
|
|
// CHECK-NOT: fix-it
|
|
|
|
return byte;
|
|
}
|
|
|
|
// CHECK: warning: value size does not match register size specified by the constraint and modifier
|
|
// CHECK: asm ("%w0 %w1 %2" : "+r" (one) : "r" (wide_two));
|
|
// CHECK: note: use constraint modifier "w"
|
|
// CHECK: fix-it:{{.*}}:{47:17-47:19}:"%w2"
|
|
|
|
void read_write_modifier0(int one, int two) {
|
|
long wide_two = two;
|
|
asm ("%w0 %w1 %2" : "+r" (one) : "r" (wide_two));
|
|
}
|
|
|
|
// CHECK-NOT: warning:
|
|
void read_write_modifier1(int one, int two) {
|
|
long wide_two = two;
|
|
asm ("%w0 %1" : "+r" (one), "+r" (wide_two));
|
|
}
|