clang/test/CodeGen/bpf-struct-argument.c

   1 // REQUIRES: bpf-registered-target
   2 // RUN: %clang_cc1 -triple bpf -O2 -emit-llvm -disable-llvm-passes %s -o - | FileCheck %s
   3
   4 struct t1 {};
   5 struct t2 {
   6   int a;
   7 };
   8 struct t3 {
   9   int a;
  10   long b;
  11 };
  12 struct t4 {
  13   long a;
  14   long b;
  15   long c;
  16 };
  17
  18 int foo1(struct t1 arg1, struct t2 arg2) {
  19 // CHECK: define dso_local i32 @foo1(i32 %arg2.coerce)
  20   return arg2.a;
  21 }
  22
  23 int foo2(struct t3 arg1, struct t4 arg2) {
  24 // CHECK: define dso_local i32 @foo2([2 x i64] %arg1.coerce, ptr noundef byval(%struct.t4) align 8 %arg2)
  25   return arg1.a + arg2.a;
  26 }
  27
  28 int foo3(void) {
  29   struct t1 tmp1 = {};
  30   struct t2 tmp2 = {};
  31   struct t3 tmp3 = {};
  32   struct t4 tmp4 = {};
  33   return foo1(tmp1, tmp2) + foo2(tmp3, tmp4);
  34 // CHECK: call i32 @foo1(i32 %{{[a-zA-Z0-9]+}})
  35 // CHECK: call i32 @foo2([2 x i64] %{{[a-zA-Z0-9]+}}, ptr noundef byval(%struct.t4) align 8 %tmp4)
  36 }