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a7a1c7e971
This directory needs to be reorganized and some of the tests need changes to make them executable. Also comments would help... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2865 91177308-0d34-0410-b5e6-96231b3b80d8
157 lines
4.3 KiB
C
157 lines
4.3 KiB
C
#include <stdio.h>
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#include <stdarg.h>
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#undef LLVM_CAN_PASS_STRUCTS_BY_VALUE
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#ifdef LLVM_CAN_PASS_STRUCTS_BY_VALUE
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typedef struct SmallStruct_struct {
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char c1, c2, c3, c4;
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int n;
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} SmallStruct;
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typedef struct BigStruct_struct {
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char c1, c2, c3, c4;
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double d1, d2; /* Note: d1 will need padding */
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int n;
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struct BigStruct_struct* next; /* Note: next will need padding */
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} BigStruct;
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SmallStruct
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printStructArgs(SmallStruct s1, /* Could fit in reg */
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int a1, float a2, char a3, double a4, char* a5,
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BigStruct s2, /* Must go on stack */
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int a6, float a7, char a8, double a9, char* a10,
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SmallStruct s3, /* Probably no available regs */
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int a11, float a12, char a13, double a14, char* a15)
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{
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SmallStruct result;
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printf("\nprintStructArgs with 13 arguments:\n");
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printf("\tArg 1 : %c %c %c %c %d\n", s1.c1, s1.c2, s1.c3, s1.c4, s1.n);
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printf("\tArgs 2-6 : %d %f %c %lf %c\n", a1, a2, a3, a4, *a5);
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printf("\tArg 7 : %c %c %c %c %lf %lf %d %p\n",
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s2.c1, s2.c2, s2.c3, s2.c4, s2.d1, s2.d2, s2.n,s2.next);
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printf("\tArg 8 : %c %c %c %c %d\n", s3.c1, s3.c2, s3.c3, s3.c4, s3.n);
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printf("\tArgs 9-13 : %d %f %c %lf %c\n", a6, a7, a8, a9, *a10);
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printf("\tArgs 14-18: %d %f %c %lf %c\n", a11, a12, a13, a14, *a15);
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printf("\n");
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result.c1 = s2.c1;
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result.c2 = s2.c2;
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result.c3 = s2.c3;
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result.c4 = s2.c4;
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result.n = s2.n;
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return result;
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}
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#endif /* LLVM_CAN_PASS_STRUCTS_BY_VALUE */
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#undef LLC_SUPPORTS_VARARGS_FUNCTIONS
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#ifdef LLC_SUPPORTS_VARARGS_FUNCTIONS
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void
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printVarArgs(int a1, ...)
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{
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double a2, a7, a12; /* float is promoted to double! */
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int a3, a8, a13; /* char is promoted to int! */
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double a4, a9, a14;
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char *a5, *a10, *a15;
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int a6, a11;
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va_list ap;
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va_start(ap, a1);
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a2 = va_arg(ap, double);
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a3 = va_arg(ap, int);
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a4 = va_arg(ap, double);
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a5 = va_arg(ap, char*);
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a6 = va_arg(ap, int);
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a7 = va_arg(ap, double);
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a8 = va_arg(ap, int);
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a9 = va_arg(ap, double);
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a10 = va_arg(ap, char*);
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a11 = va_arg(ap, int);
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a12 = va_arg(ap, double);
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a13 = va_arg(ap, int);
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a14 = va_arg(ap, double);
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a15 = va_arg(ap, char*);
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printf("\nprintVarArgs with 15 arguments:\n");
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printf("\tArgs 1-5 : %d %f %c %lf %c\n", a1, a2, a3, a4, *a5);
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printf("\tArgs 6-10 : %d %f %c %lf %c\n", a6, a7, a8, a9, *a10);
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printf("\tArgs 11-14: %d %f %c %lf %c\n", a11, a12, a13, a14, *a15);
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printf("\n");
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return;
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}
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#endif /* LLC_SUPPORTS_VARARGS_FUNCTIONS */
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void
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printArgsNoRet(int a1, float a2, char a3, double a4, char* a5,
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int a6, float a7, char a8, double a9, char* a10,
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int a11, float a12, char a13, double a14, char* a15)
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{
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printf("\nprintArgsNoRet with 15 arguments:\n");
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printf("\tArgs 1-5 : %d %f %c %lf %c\n", a1, a2, a3, a4, *a5);
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printf("\tArgs 6-10 : %d %f %c %lf %c\n", a6, a7, a8, a9, *a10);
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printf("\tArgs 11-14: %d %f %c %lf %c\n", a11, a12, a13, a14, *a15);
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printf("\n");
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return;
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}
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int
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main(int argc, char** argv)
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{
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#ifdef LLVM_CAN_PASS_STRUCTS_BY_VALUE
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SmallStruct s1, s3, result;
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BigStruct s2;
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#endif /* LLVM_CAN_PASS_STRUCTS_BY_VALUE */
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printArgsNoRet(1, 2.1, 'c', 4.1, "e",
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6, 7.1, 'h', 9.1, "j",
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11, 12.1, 'm', 14.1, "o");
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#ifdef LLC_SUPPORTS_VARARGS_FUNCTIONS
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printVarArgs(1, 2.2, 'c', 4.2, "e",
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6, 7.2, 'h', 9.2, "j",
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11, 12.2, 'm', 14.2, "o");
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#endif /* LLC_SUPPORTS_VARARGS_FUNCTIONS */
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#ifdef LLVM_CAN_PASS_STRUCTS_BY_VALUE
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s1.c1 = 'a';
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s1.c2 = 'b';
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s1.c3 = 'c';
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s1.c4 = 'd';
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s1.n = 111;
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s2.c1 = 'h';
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s2.c2 = 'i';
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s2.c3 = 'j';
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s2.c4 = 'k';
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s2.d1 = 1.1;
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s2.d2 = 2.2;
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s2.n = 222;
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s2.next = &s2;
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s3.c1 = 'w';
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s3.c2 = 'x';
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s3.c3 = 'y';
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s3.c4 = 'z';
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s3.n = 333;
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result = printStructArgs(s1,
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1, 2.0, 'c', 4.0, "e",
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s2,
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6, 7.0, 'h', 9.0, "j",
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s3);
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printf("\nprintStructArgs returns:\n\t%c %c %c %c %d\n\n",
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result.c1, result.c2, result.c3, result.c4, result.n);
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#endif /* LLVM_CAN_PASS_STRUCTS_BY_VALUE */
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return 0;
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}
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