clang/test/CodeGen/asm-inout.c


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// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
// PR3800
int *foo(void);

// CHECK: @test1
void test1() {
  // CHECK: [[REGCALLRESULT:%[a-zA-Z0-9\.]+]] = call i32* @foo()
  // CHECK: call void asm "foobar", "=*m,*m,~{dirflag},~{fpsr},~{flags}"(i32* [[REGCALLRESULT]], i32* [[REGCALLRESULT]])
  asm ("foobar" : "+m"(*foo()));
}

// CHECK: @test2
void test2() {
  // CHECK: [[REGCALLRESULT:%[a-zA-Z0-9\.]+]] = call i32* @foo()
  // CHECK: load i32* [[REGCALLRESULT]]
  // CHECK: call i32 asm
  // CHECK: store i32 {{%[a-zA-Z0-9\.]+}}, i32* [[REGCALLRESULT]]
  asm ("foobar" : "+r"(*foo()));
}