Add test.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@261310 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/arm-vfp-asm-constraint.c

+// REQUIRES: arm-registered-target
+// RUN: %clang_cc1 -triple armv7-unknown-unknown -mfpmath vfp -emit-llvm -o - %s | FileCheck %s
+
+// CHECK-NOT: error:
+
+double fabs(double x) { // CHECK-LABEL: @fabs(
+  // CHECK: call double asm "vabs.f64 ${0:P}, ${1:P}", "=w,w"(double
+  __asm__("vabs.f64 %P0, %P1"
+          : "=w"(x)
+          : "w"(x));
+  return x;
+}
+
+float fabsf(float x) { // CHECK-LABEL: @fabsf(
+  // CHECK: call float asm "vabs.f32 $0, $1", "=t,t"(float
+  __asm__("vabs.f32 %0, %1"
+          : "=t"(x)
+          : "t"(x));
+  return x;
+}
+
+double sqrt(double x) { // CHECK-LABEL: @sqrt(
+  // CHECK: call double asm "vsqrt.f64 ${0:P}, ${1:P}", "=w,w"(double
+  __asm__("vsqrt.f64 %P0, %P1"
+          : "=w"(x)
+          : "w"(x));
+  return x;
+}
+
+float sqrtf(float x) { // CHECK-LABEL: @sqrtf(
+  // CHECK: call float asm "vsqrt.f32 $0, $1", "=t,t"(float
+  __asm__("vsqrt.f32 %0, %1"
+          : "=t"(x)
+          : "t"(x));
+  return x;
+}