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clang-p2996/clang/test/CodeGen/builtins.c
Matt Arsenault f652caea65 Emit more intrinsics for builtin functions 
This is important for building libclc. Since r273039 tests are failing
due to now emitting calls to these functions instead of emitting the
DAG node. The libm function names are implemented for OpenCL, and should
call the locally defined versions, so -fno-builtin is used. The IR
Some functions use the __builtins and expect the intrinsics to be
emitted. Without this we end up with nobuiltin calls to intrinsics
or to unsupported library calls.

llvm-svn: 274370
2016-07-01 17:38:14 +00:00

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// RUN: %clang_cc1 -emit-llvm -o %t %s
// RUN: not grep __builtin %t
// RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-darwin-apple | FileCheck %s
int printf(const char *, ...);
void p(char *str, int x) {
printf("%s: %d\n", str, x);
}
void q(char *str, double x) {
printf("%s: %f\n", str, x);
}
void r(char *str, void *ptr) {
printf("%s: %p\n", str, ptr);
}
int random(void);
int main() {
int N = random();
#define P(n,args) p(#n #args, __builtin_##n args)
#define Q(n,args) q(#n #args, __builtin_##n args)
#define R(n,args) r(#n #args, __builtin_##n args)
#define V(n,args) p(#n #args, (__builtin_##n args, 0))
P(types_compatible_p, (int, float));
P(choose_expr, (0, 10, 20));
P(constant_p, (sizeof(10)));
P(expect, (N == 12, 0));
V(prefetch, (&N));
V(prefetch, (&N, 1));
V(prefetch, (&N, 1, 0));
// Numeric Constants
Q(huge_val, ());
Q(huge_valf, ());
Q(huge_vall, ());
Q(inf, ());
Q(inff, ());
Q(infl, ());
P(fpclassify, (0, 1, 2, 3, 4, 1.0));
P(fpclassify, (0, 1, 2, 3, 4, 1.0f));
P(fpclassify, (0, 1, 2, 3, 4, 1.0l));
Q(nan, (""));
Q(nanf, (""));
Q(nanl, (""));
Q(nans, (""));
Q(nan, ("10"));
Q(nanf, ("10"));
Q(nanl, ("10"));
Q(nans, ("10"));
P(isgreater, (1., 2.));
P(isgreaterequal, (1., 2.));
P(isless, (1., 2.));
P(islessequal, (1., 2.));
P(islessgreater, (1., 2.));
P(isunordered, (1., 2.));
P(isinf, (1.));
P(isinf_sign, (1.));
P(isnan, (1.));
// Bitwise & Numeric Functions
P(abs, (N));
P(clz, (N));
P(clzl, (N));
P(clzll, (N));
P(ctz, (N));
P(ctzl, (N));
P(ctzll, (N));
P(ffs, (N));
P(ffsl, (N));
P(ffsll, (N));
P(parity, (N));
P(parityl, (N));
P(parityll, (N));
P(popcount, (N));
P(popcountl, (N));
P(popcountll, (N));
Q(powi, (1.2f, N));
Q(powif, (1.2f, N));
Q(powil, (1.2f, N));
// Lib functions
int a, b, n = random(); // Avoid optimizing out.
char s0[10], s1[] = "Hello";
V(strcat, (s0, s1));
V(strcmp, (s0, s1));
V(strncat, (s0, s1, n));
V(strchr, (s0, s1[0]));
V(strrchr, (s0, s1[0]));
V(strcpy, (s0, s1));
V(strncpy, (s0, s1, n));
// Object size checking
V(__memset_chk, (s0, 0, sizeof s0, n));
V(__memcpy_chk, (s0, s1, sizeof s0, n));
V(__memmove_chk, (s0, s1, sizeof s0, n));
V(__mempcpy_chk, (s0, s1, sizeof s0, n));
V(__strncpy_chk, (s0, s1, sizeof s0, n));
V(__strcpy_chk, (s0, s1, n));
s0[0] = 0;
V(__strcat_chk, (s0, s1, n));
P(object_size, (s0, 0));
P(object_size, (s0, 1));
P(object_size, (s0, 2));
P(object_size, (s0, 3));
// Whatever
P(bswap16, (N));
P(bswap32, (N));
P(bswap64, (N));
// CHECK: @llvm.bitreverse.i8
// CHECK: @llvm.bitreverse.i16
// CHECK: @llvm.bitreverse.i32
// CHECK: @llvm.bitreverse.i64
P(bitreverse8, (N));
P(bitreverse16, (N));
P(bitreverse32, (N));
P(bitreverse64, (N));
// FIXME
// V(clear_cache, (&N, &N+1));
V(trap, ());
R(extract_return_addr, (&N));
P(signbit, (1.0));
return 0;
}
void foo() {
__builtin_strcat(0, 0);
}
// CHECK-LABEL: define void @bar(
void bar() {
float f;
double d;
long double ld;
// LLVM's hex representation of float constants is really unfortunate;
// basically it does a float-to-double "conversion" and then prints the
// hex form of that. That gives us weird artifacts like exponents
// that aren't numerically similar to the original exponent and
// significand bit-patterns that are offset by three bits (because
// the exponent was expanded from 8 bits to 11).
//
// 0xAE98 == 1010111010011000
// 0x15D3 == 1010111010011
f = __builtin_huge_valf(); // CHECK: float 0x7FF0000000000000
d = __builtin_huge_val(); // CHECK: double 0x7FF0000000000000
ld = __builtin_huge_vall(); // CHECK: x86_fp80 0xK7FFF8000000000000000
f = __builtin_nanf(""); // CHECK: float 0x7FF8000000000000
d = __builtin_nan(""); // CHECK: double 0x7FF8000000000000
ld = __builtin_nanl(""); // CHECK: x86_fp80 0xK7FFFC000000000000000
f = __builtin_nanf("0xAE98"); // CHECK: float 0x7FF815D300000000
d = __builtin_nan("0xAE98"); // CHECK: double 0x7FF800000000AE98
ld = __builtin_nanl("0xAE98"); // CHECK: x86_fp80 0xK7FFFC00000000000AE98
f = __builtin_nansf(""); // CHECK: float 0x7FF4000000000000
d = __builtin_nans(""); // CHECK: double 0x7FF4000000000000
ld = __builtin_nansl(""); // CHECK: x86_fp80 0xK7FFFA000000000000000
f = __builtin_nansf("0xAE98"); // CHECK: float 0x7FF015D300000000
d = __builtin_nans("0xAE98"); // CHECK: double 0x7FF000000000AE98
ld = __builtin_nansl("0xAE98");// CHECK: x86_fp80 0xK7FFF800000000000AE98
}
// CHECK: }
// CHECK-LABEL: define void @test_float_builtins
void test_float_builtins(float F, double D, long double LD) {
volatile int res;
res = __builtin_isinf(F);
// CHECK: call float @llvm.fabs.f32(float
// CHECK: fcmp oeq float {{.*}}, 0x7FF0000000000000
res = __builtin_isinf(D);
// CHECK: call double @llvm.fabs.f64(double
// CHECK: fcmp oeq double {{.*}}, 0x7FF0000000000000
res = __builtin_isinf(LD);
// CHECK: call x86_fp80 @llvm.fabs.f80(x86_fp80
// CHECK: fcmp oeq x86_fp80 {{.*}}, 0xK7FFF8000000000000000
res = __builtin_isinf_sign(F);
// CHECK: %[[ABS:.*]] = call float @llvm.fabs.f32(float %[[ARG:.*]])
// CHECK: %[[ISINF:.*]] = fcmp oeq float %[[ABS]], 0x7FF0000000000000
// CHECK: %[[BITCAST:.*]] = bitcast float %[[ARG]] to i32
// CHECK: %[[ISNEG:.*]] = icmp slt i32 %[[BITCAST]], 0
// CHECK: %[[SIGN:.*]] = select i1 %[[ISNEG]], i32 -1, i32 1
// CHECK: select i1 %[[ISINF]], i32 %[[SIGN]], i32 0
res = __builtin_isinf_sign(D);
// CHECK: %[[ABS:.*]] = call double @llvm.fabs.f64(double %[[ARG:.*]])
// CHECK: %[[ISINF:.*]] = fcmp oeq double %[[ABS]], 0x7FF0000000000000
// CHECK: %[[BITCAST:.*]] = bitcast double %[[ARG]] to i64
// CHECK: %[[ISNEG:.*]] = icmp slt i64 %[[BITCAST]], 0
// CHECK: %[[SIGN:.*]] = select i1 %[[ISNEG]], i32 -1, i32 1
// CHECK: select i1 %[[ISINF]], i32 %[[SIGN]], i32 0
res = __builtin_isinf_sign(LD);
// CHECK: %[[ABS:.*]] = call x86_fp80 @llvm.fabs.f80(x86_fp80 %[[ARG:.*]])
// CHECK: %[[ISINF:.*]] = fcmp oeq x86_fp80 %[[ABS]], 0xK7FFF8000000000000000
// CHECK: %[[BITCAST:.*]] = bitcast x86_fp80 %[[ARG]] to i80
// CHECK: %[[ISNEG:.*]] = icmp slt i80 %[[BITCAST]], 0
// CHECK: %[[SIGN:.*]] = select i1 %[[ISNEG]], i32 -1, i32 1
// CHECK: select i1 %[[ISINF]], i32 %[[SIGN]], i32 0
res = __builtin_isfinite(F);
// CHECK: call float @llvm.fabs.f32(float
// CHECK: fcmp one float {{.*}}, 0x7FF0000000000000
res = __builtin_isnormal(F);
// CHECK: fcmp oeq float
// CHECK: call float @llvm.fabs.f32(float
// CHECK: fcmp ult float {{.*}}, 0x7FF0000000000000
// CHECK: fcmp uge float {{.*}}, 0x3810000000000000
// CHECK: and i1
// CHECK: and i1
}
// CHECK-LABEL: define void @test_float_builtin_ops
void test_float_builtin_ops(float F, double D, long double LD) {
volatile float resf;
volatile double resd;
volatile long double resld;
resf = __builtin_fmodf(F,F);
// CHECK: frem float
resd = __builtin_fmod(D,D);
// CHECK: frem double
resld = __builtin_fmodl(LD,LD);
// CHECK: frem x86_fp80
resf = __builtin_fabsf(F);
resd = __builtin_fabs(D);
resld = __builtin_fabsl(LD);
// CHECK: call float @llvm.fabs.f32(float
// CHECK: call double @llvm.fabs.f64(double
// CHECK: call x86_fp80 @llvm.fabs.f80(x86_fp80
resf = __builtin_canonicalizef(F);
resd = __builtin_canonicalize(D);
resld = __builtin_canonicalizel(LD);
// CHECK: call float @llvm.canonicalize.f32(float
// CHECK: call double @llvm.canonicalize.f64(double
// CHECK: call x86_fp80 @llvm.canonicalize.f80(x86_fp80
resf = __builtin_fminf(F, F);
// CHECK: call float @llvm.minnum.f32
resd = __builtin_fmin(D, D);
// CHECK: call double @llvm.minnum.f64
resld = __builtin_fminl(LD, LD);
// CHECK: call x86_fp80 @llvm.minnum.f80
resf = __builtin_fmaxf(F, F);
// CHECK: call float @llvm.maxnum.f32
resd = __builtin_fmax(D, D);
// CHECK: call double @llvm.maxnum.f64
resld = __builtin_fmaxl(LD, LD);
// CHECK: call x86_fp80 @llvm.maxnum.f80
resf = __builtin_fabsf(F);
// CHECK: call float @llvm.fabs.f32
resd = __builtin_fabs(D);
// CHECK: call double @llvm.fabs.f64
resld = __builtin_fabsl(LD);
// CHECK: call x86_fp80 @llvm.fabs.f80
resf = __builtin_copysignf(F, F);
// CHECK: call float @llvm.copysign.f32
resd = __builtin_copysign(D, D);
// CHECK: call double @llvm.copysign.f64
resld = __builtin_copysignl(LD, LD);
// CHECK: call x86_fp80 @llvm.copysign.f80
resf = __builtin_ceilf(F);
// CHECK: call float @llvm.ceil.f32
resd = __builtin_ceil(D);
// CHECK: call double @llvm.ceil.f64
resld = __builtin_ceill(LD);
// CHECK: call x86_fp80 @llvm.ceil.f80
resf = __builtin_floorf(F);
// CHECK: call float @llvm.floor.f32
resd = __builtin_floor(D);
// CHECK: call double @llvm.floor.f64
resld = __builtin_floorl(LD);
// CHECK: call x86_fp80 @llvm.floor.f80
resf = __builtin_truncf(F);
// CHECK: call float @llvm.trunc.f32
resd = __builtin_trunc(D);
// CHECK: call double @llvm.trunc.f64
resld = __builtin_truncl(LD);
// CHECK: call x86_fp80 @llvm.trunc.f80
resf = __builtin_rintf(F);
// CHECK: call float @llvm.rint.f32
resd = __builtin_rint(D);
// CHECK: call double @llvm.rint.f64
resld = __builtin_rintl(LD);
// CHECK: call x86_fp80 @llvm.rint.f80
resf = __builtin_nearbyintf(F);
// CHECK: call float @llvm.nearbyint.f32
resd = __builtin_nearbyint(D);
// CHECK: call double @llvm.nearbyint.f64
resld = __builtin_nearbyintl(LD);
// CHECK: call x86_fp80 @llvm.nearbyint.f80
resf = __builtin_roundf(F);
// CHECK: call float @llvm.round.f32
resd = __builtin_round(D);
// CHECK: call double @llvm.round.f64
resld = __builtin_roundl(LD);
// CHECK: call x86_fp80 @llvm.round.f80
}
// __builtin_longjmp isn't supported on all platforms, so only test it on X86.
#ifdef __x86_64__
// CHECK-LABEL: define void @test_builtin_longjmp
void test_builtin_longjmp(void **buffer) {
// CHECK: [[BITCAST:%.*]] = bitcast
// CHECK-NEXT: call void @llvm.eh.sjlj.longjmp(i8* [[BITCAST]])
__builtin_longjmp(buffer, 1);
// CHECK-NEXT: unreachable
}
#endif
// CHECK-LABEL: define i64 @test_builtin_readcyclecounter
long long test_builtin_readcyclecounter() {
// CHECK: call i64 @llvm.readcyclecounter()
return __builtin_readcyclecounter();
}
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