212 lines
5.7 KiB
C
212 lines
5.7 KiB
C
// RUN: %clang_cc1 -emit-llvm -o %t %s
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// RUN: not grep __builtin %t
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// RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-darwin-apple | FileCheck %s
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int printf(const char *, ...);
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void p(char *str, int x) {
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printf("%s: %d\n", str, x);
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}
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void q(char *str, double x) {
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printf("%s: %f\n", str, x);
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}
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void r(char *str, void *ptr) {
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printf("%s: %p\n", str, ptr);
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}
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int random(void);
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int main() {
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int N = random();
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#define P(n,args) p(#n #args, __builtin_##n args)
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#define Q(n,args) q(#n #args, __builtin_##n args)
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#define R(n,args) r(#n #args, __builtin_##n args)
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#define V(n,args) p(#n #args, (__builtin_##n args, 0))
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P(types_compatible_p, (int, float));
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P(choose_expr, (0, 10, 20));
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P(constant_p, (sizeof(10)));
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P(expect, (N == 12, 0));
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V(prefetch, (&N));
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V(prefetch, (&N, 1));
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V(prefetch, (&N, 1, 0));
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// Numeric Constants
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Q(huge_val, ());
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Q(huge_valf, ());
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Q(huge_vall, ());
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Q(inf, ());
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Q(inff, ());
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Q(infl, ());
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P(fpclassify, (0, 1, 2, 3, 4, 1.0));
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P(fpclassify, (0, 1, 2, 3, 4, 1.0f));
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P(fpclassify, (0, 1, 2, 3, 4, 1.0l));
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// FIXME:
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// P(isinf_sign, (1.0));
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Q(nan, (""));
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Q(nanf, (""));
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Q(nanl, (""));
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Q(nans, (""));
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Q(nan, ("10"));
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Q(nanf, ("10"));
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Q(nanl, ("10"));
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Q(nans, ("10"));
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P(isgreater, (1., 2.));
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P(isgreaterequal, (1., 2.));
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P(isless, (1., 2.));
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P(islessequal, (1., 2.));
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P(islessgreater, (1., 2.));
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P(isunordered, (1., 2.));
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P(isnan, (1.));
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// Bitwise & Numeric Functions
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P(abs, (N));
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P(clz, (N));
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P(clzl, (N));
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P(clzll, (N));
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P(ctz, (N));
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P(ctzl, (N));
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P(ctzll, (N));
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P(ffs, (N));
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P(ffsl, (N));
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P(ffsll, (N));
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P(parity, (N));
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P(parityl, (N));
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P(parityll, (N));
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P(popcount, (N));
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P(popcountl, (N));
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P(popcountll, (N));
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Q(powi, (1.2f, N));
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Q(powif, (1.2f, N));
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Q(powil, (1.2f, N));
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// Lib functions
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int a, b, n = random(); // Avoid optimizing out.
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char s0[10], s1[] = "Hello";
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V(strcat, (s0, s1));
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V(strcmp, (s0, s1));
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V(strncat, (s0, s1, n));
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V(strchr, (s0, s1[0]));
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V(strrchr, (s0, s1[0]));
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V(strcpy, (s0, s1));
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V(strncpy, (s0, s1, n));
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// Object size checking
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V(__memset_chk, (s0, 0, sizeof s0, n));
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V(__memcpy_chk, (s0, s1, sizeof s0, n));
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V(__memmove_chk, (s0, s1, sizeof s0, n));
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V(__mempcpy_chk, (s0, s1, sizeof s0, n));
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V(__strncpy_chk, (s0, s1, sizeof s0, n));
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V(__strcpy_chk, (s0, s1, n));
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s0[0] = 0;
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V(__strcat_chk, (s0, s1, n));
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P(object_size, (s0, 0));
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P(object_size, (s0, 1));
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P(object_size, (s0, 2));
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P(object_size, (s0, 3));
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// Whatever
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P(bswap16, (N));
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P(bswap32, (N));
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P(bswap64, (N));
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// FIXME
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// V(clear_cache, (&N, &N+1));
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V(trap, ());
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R(extract_return_addr, (&N));
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P(signbit, (1.0));
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return 0;
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}
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void foo() {
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__builtin_strcat(0, 0);
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}
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// CHECK-LABEL: define void @bar(
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void bar() {
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float f;
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double d;
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long double ld;
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// LLVM's hex representation of float constants is really unfortunate;
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// basically it does a float-to-double "conversion" and then prints the
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// hex form of that. That gives us weird artifacts like exponents
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// that aren't numerically similar to the original exponent and
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// significand bit-patterns that are offset by three bits (because
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// the exponent was expanded from 8 bits to 11).
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//
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// 0xAE98 == 1010111010011000
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// 0x15D3 == 1010111010011
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f = __builtin_huge_valf(); // CHECK: float 0x7FF0000000000000
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d = __builtin_huge_val(); // CHECK: double 0x7FF0000000000000
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ld = __builtin_huge_vall(); // CHECK: x86_fp80 0xK7FFF8000000000000000
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f = __builtin_nanf(""); // CHECK: float 0x7FF8000000000000
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d = __builtin_nan(""); // CHECK: double 0x7FF8000000000000
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ld = __builtin_nanl(""); // CHECK: x86_fp80 0xK7FFFC000000000000000
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f = __builtin_nanf("0xAE98"); // CHECK: float 0x7FF815D300000000
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d = __builtin_nan("0xAE98"); // CHECK: double 0x7FF800000000AE98
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ld = __builtin_nanl("0xAE98"); // CHECK: x86_fp80 0xK7FFFC00000000000AE98
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f = __builtin_nansf(""); // CHECK: float 0x7FF4000000000000
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d = __builtin_nans(""); // CHECK: double 0x7FF4000000000000
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ld = __builtin_nansl(""); // CHECK: x86_fp80 0xK7FFFA000000000000000
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f = __builtin_nansf("0xAE98"); // CHECK: float 0x7FF015D300000000
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d = __builtin_nans("0xAE98"); // CHECK: double 0x7FF000000000AE98
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ld = __builtin_nansl("0xAE98");// CHECK: x86_fp80 0xK7FFF800000000000AE98
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}
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// CHECK: }
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// CHECK-LABEL: define void @test_float_builtins
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void test_float_builtins(float F, double D, long double LD) {
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volatile int res;
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res = __builtin_isinf(F);
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// CHECK: call float @fabsf(float
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// CHECK: fcmp oeq float {{.*}}, 0x7FF0000000000000
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res = __builtin_isinf(D);
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// CHECK: call double @fabs(double
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// CHECK: fcmp oeq double {{.*}}, 0x7FF0000000000000
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res = __builtin_isinf(LD);
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// CHECK: call x86_fp80 @fabsl(x86_fp80
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// CHECK: fcmp oeq x86_fp80 {{.*}}, 0xK7FFF8000000000000000
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res = __builtin_isfinite(F);
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// CHECK: fcmp oeq float
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// CHECK: call float @fabsf
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// CHECK: fcmp une float {{.*}}, 0x7FF0000000000000
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// CHECK: and i1
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res = __builtin_isnormal(F);
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// CHECK: fcmp oeq float
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// CHECK: call float @fabsf
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// CHECK: fcmp ult float {{.*}}, 0x7FF0000000000000
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// CHECK: fcmp uge float {{.*}}, 0x3810000000000000
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// CHECK: and i1
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// CHECK: and i1
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}
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// CHECK-LABEL: define void @test_builtin_longjmp
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void test_builtin_longjmp(void **buffer) {
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// CHECK: [[BITCAST:%.*]] = bitcast
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// CHECK-NEXT: call void @llvm.eh.sjlj.longjmp(i8* [[BITCAST]])
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__builtin_longjmp(buffer, 1);
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// CHECK-NEXT: unreachable
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}
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// CHECK-LABEL: define i64 @test_builtin_readcyclecounter
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long long test_builtin_readcyclecounter() {
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// CHECK: call i64 @llvm.readcyclecounter()
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return __builtin_readcyclecounter();
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}
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