56 lines
2 KiB
C
56 lines
2 KiB
C
// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -emit-llvm -o - %s | FileCheck %s
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// The only part clang really deals with is the lvalue/rvalue
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// distinction on constraints. It's sufficient to emit llvm and make
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// sure that's sane.
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long var;
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void test_generic_constraints(int var32, long var64) {
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asm("add %0, %1, %1" : "=r"(var32) : "0"(var32));
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// CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i32*
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// CHECK: call i32 asm "add $0, $1, $1", "=r,0"(i32 [[R32_ARG]])
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asm("add %0, %1, %1" : "=r"(var64) : "0"(var64));
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// CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i64*
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// CHECK: call i64 asm "add $0, $1, $1", "=r,0"(i64 [[R32_ARG]])
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asm("ldr %0, %1" : "=r"(var32) : "m"(var));
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asm("ldr %0, [%1]" : "=r"(var64) : "r"(&var));
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// CHECK: call i32 asm "ldr $0, $1", "=r,*m"(i64* @var)
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// CHECK: call i64 asm "ldr $0, [$1]", "=r,r"(i64* @var)
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}
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float f;
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double d;
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void test_constraint_w() {
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asm("fadd %s0, %s1, %s1" : "=w"(f) : "w"(f));
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// CHECK: [[FLT_ARG:%[a-zA-Z_0-9]+]] = load float* @f
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// CHECK: call float asm "fadd ${0:s}, ${1:s}, ${1:s}", "=w,w"(float [[FLT_ARG]])
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asm("fadd %d0, %d1, %d1" : "=w"(d) : "w"(d));
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// CHECK: [[DBL_ARG:%[a-zA-Z_0-9]+]] = load double* @d
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// CHECK: call double asm "fadd ${0:d}, ${1:d}, ${1:d}", "=w,w"(double [[DBL_ARG]])
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}
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void test_constraints_immed(void) {
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asm("add x0, x0, %0" : : "I"(4095) : "x0");
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asm("and w0, w0, %0" : : "K"(0xaaaaaaaa) : "w0");
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asm("and x0, x0, %0" : : "L"(0xaaaaaaaaaaaaaaaa) : "x0");
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// CHECK: call void asm sideeffect "add x0, x0, $0", "I,~{x0}"(i32 4095)
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// CHECK: call void asm sideeffect "and w0, w0, $0", "K,~{w0}"(i32 -1431655766)
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// CHECK: call void asm sideeffect "and x0, x0, $0", "L,~{x0}"(i64 -6148914691236517206)
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}
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void test_constraint_S(void) {
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int *addr;
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asm("adrp %0, %A1\n\t"
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"add %0, %0, %L1" : "=r"(addr) : "S"(&var));
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// CHECK: call i32* asm "adrp $0, ${1:A}\0A\09add $0, $0, ${1:L}", "=r,S"(i64* @var)
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}
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void test_constraint_Q(void) {
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int val;
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asm("ldxr %0, %1" : "=r"(val) : "Q"(var));
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// CHECK: call i32 asm "ldxr $0, $1", "=r,*Q"(i64* @var)
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}
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