1 // Check the various ways in which the three classes of values 2 // (scalar, complex, aggregate) interact with parameter passing 3 // (function entry, function return, call argument, call result). 4 // 5 // We also check _Bool and empty structures, as these can have annoying 6 // corner cases. 7 8 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -O3 -emit-llvm -o - | FileCheck %s 9 // RUN: %clang_cc1 %s -triple x86_64-unknown-unknown -O3 -emit-llvm -o - | FileCheck %s 10 // RUN: %clang_cc1 %s -triple powerpc-unknown-unknown -O3 -emit-llvm -o - | FileCheck %s 11 // CHECK-NOT: @g0 12 13 typedef _Bool BoolTy; 14 typedef int ScalarTy; 15 typedef _Complex int ComplexTy; 16 typedef struct { int a, b, c; } AggrTy; 17 typedef struct { int a[0]; } EmptyTy; 18 19 static int result; 20 21 static BoolTy bool_id(BoolTy a) { return a; } 22 static AggrTy aggr_id(AggrTy a) { return a; } 23 static EmptyTy empty_id(EmptyTy a) { return a; } 24 static ScalarTy scalar_id(ScalarTy a) { return a; } 25 static ComplexTy complex_id(ComplexTy a) { return a; } 26 27 static void bool_mul(BoolTy a) { result *= a; } 28 29 static void aggr_mul(AggrTy a) { result *= a.a * a.b * a.c; } 30 31 static void empty_mul(EmptyTy a) { result *= 53; } 32 33 static void scalar_mul(ScalarTy a) { result *= a; } 34 35 static void complex_mul(ComplexTy a) { result *= __real a * __imag a; } 36 37 extern void g0(void); 38 39 void f0(void) { 40 result = 1; 41 42 bool_mul(bool_id(1)); 43 aggr_mul(aggr_id((AggrTy) { 2, 3, 5})); 44 empty_mul(empty_id((EmptyTy) {})); 45 scalar_mul(scalar_id(7)); 46 complex_mul(complex_id(11 + 13i)); 47 48 // This call should be eliminated. 49 if (result != 2 * 3 * 5 * 7 * 11 * 13 * 53) 50 g0(); 51 } 52 53
