clang/test/OpenMP/atomic_read_codegen.c

// RUN: %clang_cc1 -verify -triple x86_64-apple-darwin10 -fopenmp -x c -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -fopenmp -x c -triple x86_64-apple-darwin10 -emit-pch -o %t %s
// RUN: %clang_cc1 -fopenmp -x c -triple x86_64-apple-darwin10 -include-pch %t -verify %s -emit-llvm -o - | FileCheck %s
// expected-no-diagnostics
// REQUIRES: x86-registered-target
#ifndef HEADER
#define HEADER

_Bool bv, bx;
char cv, cx;
unsigned char ucv, ucx;
short sv, sx;
unsigned short usv, usx;
int iv, ix;
unsigned int uiv, uix;
long lv, lx;
unsigned long ulv, ulx;
long long llv, llx;
unsigned long long ullv, ullx;
float fv, fx;
double dv, dx;
long double ldv, ldx;
_Complex int civ, cix;
_Complex float cfv, cfx;
_Complex double cdv, cdx;

typedef int int4 __attribute__((__vector_size__(16)));
int4 int4x;

struct BitFields {
  int : 32;
  int a : 31;
} bfx;

struct BitFields_packed {
  int : 32;
  int a : 31;
} __attribute__ ((__packed__)) bfx_packed;

struct BitFields2 {
  int : 31;
  int a : 1;
} bfx2;

struct BitFields2_packed {
  int : 31;
  int a : 1;
} __attribute__ ((__packed__)) bfx2_packed;

struct BitFields3 {
  int : 11;
  int a : 14;
} bfx3;

struct BitFields3_packed {
  int : 11;
  int a : 14;
} __attribute__ ((__packed__)) bfx3_packed;

struct BitFields4 {
  short : 16;
  int a: 1;
  long b : 7;
} bfx4;

struct BitFields4_packed {
  short : 16;
  int a: 1;
  long b : 7;
} __attribute__ ((__packed__)) bfx4_packed;

typedef float float2 __attribute__((ext_vector_type(2)));
float2 float2x;

// Register "0" is currently an invalid register for global register variables.
// Use "esp" instead of "0".
// register int rix __asm__("0");
register int rix __asm__("esp");

int main() {
// CHECK: load atomic i8, i8*
// CHECK: store i8
#pragma omp atomic read
  bv = bx;
// CHECK: load atomic i8, i8*
// CHECK: store i8
#pragma omp atomic read
  cv = cx;
// CHECK: load atomic i8, i8*
// CHECK: store i8
#pragma omp atomic read
  ucv = ucx;
// CHECK: load atomic i16, i16*
// CHECK: store i16
#pragma omp atomic read
  sv = sx;
// CHECK: load atomic i16, i16*
// CHECK: store i16
#pragma omp atomic read
  usv = usx;
// CHECK: load atomic i32, i32*
// CHECK: store i32
#pragma omp atomic read
  iv = ix;
// CHECK: load atomic i32, i32*
// CHECK: store i32
#pragma omp atomic read
  uiv = uix;
// CHECK: load atomic i64, i64*
// CHECK: store i64
#pragma omp atomic read
  lv = lx;
// CHECK: load atomic i64, i64*
// CHECK: store i64
#pragma omp atomic read
  ulv = ulx;
// CHECK: load atomic i64, i64*
// CHECK: store i64
#pragma omp atomic read
  llv = llx;
// CHECK: load atomic i64, i64*
// CHECK: store i64
#pragma omp atomic read
  ullv = ullx;
// CHECK: load atomic i32, i32* bitcast (float*
// CHECK: bitcast i32 {{.*}} to float
// CHECK: store float
#pragma omp atomic read
  fv = fx;
// CHECK: load atomic i64, i64* bitcast (double*
// CHECK: bitcast i64 {{.*}} to double
// CHECK: store double
#pragma omp atomic read
  dv = dx;
// CHECK: [[LD:%.+]] = load atomic i128, i128* bitcast (x86_fp80*
// CHECK: [[BITCAST:%.+]] = bitcast x86_fp80* [[LDTEMP:%.*]] to i128*
// CHECK: store i128 [[LD]], i128* [[BITCAST]]
// CHECK: [[LD:%.+]] = load x86_fp80, x86_fp80* [[LDTEMP]]
// CHECK: store x86_fp80 [[LD]]
#pragma omp atomic read
  ldv = ldx;
// CHECK: call{{.*}} void @__atomic_load(i64 8,
// CHECK: store i32
// CHECK: store i32
#pragma omp atomic read
  civ = cix;
// CHECK: call{{.*}} void @__atomic_load(i64 8,
// CHECK: store float
// CHECK: store float
#pragma omp atomic read
  cfv = cfx;
// CHECK: call{{.*}} void @__atomic_load(i64 16,
// CHECK: call{{.*}} @__kmpc_flush(
// CHECK: store double
// CHECK: store double
#pragma omp atomic seq_cst read
  cdv = cdx;
// CHECK: load atomic i64, i64*
// CHECK: store i8
#pragma omp atomic read
  bv = ulx;
// CHECK: load atomic i8, i8*
// CHECK: store i8
#pragma omp atomic read
  cv = bx;
// CHECK: load atomic i8, i8*
// CHECK: call{{.*}} @__kmpc_flush(
// CHECK: store i8
#pragma omp atomic read, seq_cst
  ucv = cx;
// CHECK: load atomic i64, i64*
// CHECK: store i16
#pragma omp atomic read
  sv = ulx;
// CHECK: load atomic i64, i64*
// CHECK: store i16
#pragma omp atomic read
  usv = lx;
// CHECK: load atomic i32, i32*
// CHECK: call{{.*}} @__kmpc_flush(
// CHECK: store i32
#pragma omp atomic seq_cst, read
  iv = uix;
// CHECK: load atomic i32, i32*
// CHECK: store i32
#pragma omp atomic read
  uiv = ix;
// CHECK: call{{.*}} void @__atomic_load(i64 8,
// CHECK: store i64
#pragma omp atomic read
  lv = cix;
// CHECK: load atomic i32, i32*
// CHECK: store i64
#pragma omp atomic read
  ulv = fx;
// CHECK: load atomic i64, i64*
// CHECK: store i64
#pragma omp atomic read
  llv = dx;
// CHECK: load atomic i128, i128*
// CHECK: store i64
#pragma omp atomic read
  ullv = ldx;
// CHECK: call{{.*}} void @__atomic_load(i64 8,
// CHECK: store float
#pragma omp atomic read
  fv = cix;
// CHECK: load atomic i16, i16*
// CHECK: store double
#pragma omp atomic read
  dv = sx;
// CHECK: load atomic i8, i8*
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bx;
// CHECK: load atomic i8, i8*
// CHECK: store i32
// CHECK: store i32
#pragma omp atomic read
  civ = bx;
// CHECK: load atomic i16, i16*
// CHECK: store float
// CHECK: store float
#pragma omp atomic read
  cfv = usx;
// CHECK: load atomic i64, i64*
// CHECK: store double
// CHECK: store double
#pragma omp atomic read
  cdv = llx;
// CHECK: [[I128VAL:%.+]] = load atomic i128, i128* bitcast (<4 x i32>* @{{.+}} to i128*) monotonic
// CHECK: [[I128PTR:%.+]] = bitcast <4 x i32>* [[LDTEMP:%.+]] to i128*
// CHECK: store i128 [[I128VAL]], i128* [[I128PTR]]
// CHECK: [[LD:%.+]] = load <4 x i32>, <4 x i32>* [[LDTEMP]]
// CHECK: extractelement <4 x i32> [[LD]]
// CHECK: store i8
#pragma omp atomic read
  bv = int4x[0];
// CHECK: [[LD:%.+]] = load atomic i32, i32* bitcast (i8* getelementptr (i8, i8* bitcast (%{{.+}}* @{{.+}} to i8*), i64 4) to i32*) monotonic
// CHECK: store i32 [[LD]], i32* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i32, i32* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i32 [[LD]], 1
// CHECK: ashr i32 [[SHL]], 1
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx.a;
// CHECK: [[LDTEMP_VOID_PTR:%.+]] = bitcast i32* [[LDTEMP:%.+]] to i8*
// CHECK: call void @__atomic_load(i64 4, i8* getelementptr (i8, i8* bitcast (%struct.BitFields_packed* @bfx_packed to i8*), i64 4), i8* [[LDTEMP_VOID_PTR]], i32 0)
// CHECK: [[LD:%.+]] = load i32, i32* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i32 [[LD]], 1
// CHECK: ashr i32 [[SHL]], 1
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx_packed.a;
// CHECK: [[LD:%.+]] = load atomic i32, i32* getelementptr inbounds (%struct.BitFields2, %struct.BitFields2* @bfx2, i32 0, i32 0) monotonic
// CHECK: store i32 [[LD]], i32* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i32, i32* [[LDTEMP]]
// CHECK: ashr i32 [[LD]], 31
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx2.a;
// CHECK: [[LD:%.+]] = load atomic i8, i8* getelementptr (i8, i8* bitcast (%struct.BitFields2_packed* @bfx2_packed to i8*), i64 3) monotonic
// CHECK: store i8 [[LD]], i8* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i8, i8* [[LDTEMP]]
// CHECK: ashr i8 [[LD]], 7
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx2_packed.a;
// CHECK: [[LD:%.+]] = load atomic i32, i32* getelementptr inbounds (%struct.BitFields3, %struct.BitFields3* @bfx3, i32 0, i32 0) monotonic
// CHECK: store i32 [[LD]], i32* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i32, i32* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i32 [[LD]], 7
// CHECK: ashr i32 [[SHL]], 18
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx3.a;
// CHECK: [[LDTEMP_VOID_PTR:%.+]] = bitcast i24* [[LDTEMP:%.+]] to i8*
// CHECK: call void @__atomic_load(i64 3, i8* getelementptr (i8, i8* bitcast (%struct.BitFields3_packed* @bfx3_packed to i8*), i64 1), i8* [[LDTEMP_VOID_PTR]], i32 0)
// CHECK: [[LD:%.+]] = load i24, i24* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i24 [[LD]], 7
// CHECK: [[ASHR:%.+]] = ashr i24 [[SHL]], 10
// CHECK: sext i24 [[ASHR]] to i32
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx3_packed.a;
// CHECK: [[LD:%.+]] = load atomic i64, i64* bitcast (%struct.BitFields4* @bfx4 to i64*) monotonic
// CHECK: store i64 [[LD]], i64* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i64, i64* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i64 [[LD]], 47
// CHECK: [[ASHR:%.+]] = ashr i64 [[SHL]], 63
// CHECK: trunc i64 [[ASHR]] to i32
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx4.a;
// CHECK: [[LD:%.+]] = load atomic i8, i8* getelementptr inbounds (%struct.BitFields4_packed, %struct.BitFields4_packed* @bfx4_packed, i32 0, i32 0, i64 2) monotonic
// CHECK: store i8 [[LD]], i8* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i8, i8* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i8 [[LD]], 7
// CHECK: [[ASHR:%.+]] = ashr i8 [[SHL]], 7
// CHECK: sext i8 [[ASHR]] to i32
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx4_packed.a;
// CHECK: [[LD:%.+]] = load atomic i64, i64* bitcast (%struct.BitFields4* @bfx4 to i64*) monotonic
// CHECK: store i64 [[LD]], i64* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i64, i64* [[LDTEMP]]
// CHECK: [[SHL:%.+]] = shl i64 [[LD]], 40
// CHECK: [[ASHR:%.+]] = ashr i64 [[SHL]], 57
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx4.b;
// CHECK: [[LD:%.+]] = load atomic i8, i8* getelementptr inbounds (%struct.BitFields4_packed, %struct.BitFields4_packed* @bfx4_packed, i32 0, i32 0, i64 2) monotonic
// CHECK: store i8 [[LD]], i8* [[LDTEMP:%.+]]
// CHECK: [[LD:%.+]] = load i8, i8* [[LDTEMP]]
// CHECK: [[ASHR:%.+]] = ashr i8 [[LD]], 1
// CHECK: sext i8 [[ASHR]] to i64
// CHECK: store x86_fp80
#pragma omp atomic read
  ldv = bfx4_packed.b;
// CHECK: [[LD:%.+]] = load atomic i64, i64* bitcast (<2 x float>* @{{.+}} to i64*) monotonic
// CHECK: [[BITCAST:%.+]] = bitcast <2 x float>* [[LDTEMP:%.+]] to i64*
// CHECK: store i64 [[LD]], i64* [[BITCAST]]
// CHECK: [[LD:%.+]] = load <2 x float>, <2 x float>* [[LDTEMP]]
// CHECK: extractelement <2 x float> [[LD]]
// CHECK: store i64
#pragma omp atomic read
  ulv = float2x.x;
// CHECK: call{{.*}} i{{[0-9]+}} @llvm.read_register
// CHECK: call{{.*}} @__kmpc_flush(
// CHECK: store double
#pragma omp atomic read seq_cst
  dv = rix;
  return 0;
}

#endif