test/CodeGen/asm-inout.c

   1 // RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
   2 // PR3800
   3 int *foo(void);
   4
   5 // CHECK: @test1
   6 void test1() {
   7   // CHECK: [[REGCALLRESULT:%[a-zA-Z0-9\.]+]] = call i32* @foo()
   8   // CHECK: call void asm "foobar", "=*m,*m,~{dirflag},~{fpsr},~{flags}"(i32* [[REGCALLRESULT]], i32* [[REGCALLRESULT]])
   9   asm ("foobar" : "+m"(*foo()));
  10 }
  11
  12 // CHECK: @test2
  13 void test2() {
  14   // CHECK: [[REGCALLRESULT:%[a-zA-Z0-9\.]+]] = call i32* @foo()
  15   // CHECK: load i32* [[REGCALLRESULT]]
  16   // CHECK: call i32 asm
  17   // CHECK: store i32 {{%[a-zA-Z0-9\.]+}}, i32* [[REGCALLRESULT]]
  18   asm ("foobar" : "+r"(*foo()));
  19 }
  20
  21 // PR7338
  22 void test3(int *vout, int vin)
  23 {
  24   // CHECK: call void asm "opr $0,$1", "=*r|m|r,r|m|r,~{di},~{dirflag},~{fpsr},~{flags}"
  25 asm(
  26                 "opr %[vout],%[vin]"
  27                 : [vout] "=r,=m,=r" (*vout)
  28                 : [vin] "r,m,r" (vin)
  29                 : "edi"
  30                 );
  31 }