clang/test/CodeGen/builtins-nondeterministic-value.c

   1 // RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
   2
   3 typedef float float4 __attribute__((ext_vector_type(4)));
   4 typedef _Bool bool4 __attribute__((ext_vector_type(4)));
   5
   6 int clang_nondet_i( int x ) {
   7 // CHECK-LABEL: entry
   8 // CHECK: [[A:%.*]] = alloca i32
   9 // CHECK: store i32 [[X:%.*]], ptr [[A]]
  10 // CHECK: [[R:%.*]] = freeze i32 poison
  11 // CHECK: ret i32 [[R]]
  12   return __builtin_nondeterministic_value(x);
  13 }
  14
  15 float clang_nondet_f( float x ) {
  16 // CHECK-LABEL: entry
  17 // CHECK: [[A:%.*]] = alloca float
  18 // CHECK: store float [[X:%.*]], ptr [[A]]
  19 // CHECK: [[R:%.*]] = freeze float poison
  20 // CHECK: ret float [[R]]
  21   return __builtin_nondeterministic_value(x);
  22 }
  23
  24 double clang_nondet_d( double x ) {
  25 // CHECK-LABEL: entry
  26 // CHECK: [[A:%.*]] = alloca double
  27 // CHECK: store double [[X:%.*]], ptr [[A]]
  28 // CHECK: [[R:%.*]] = freeze double poison
  29 // CHECK: ret double [[R]]
  30   return __builtin_nondeterministic_value(x);
  31 }
  32
  33 _Bool clang_nondet_b( _Bool x) {
  34 // CHECK-LABEL: entry
  35 // CHECK: [[A:%.*]] = alloca i8
  36 // CHECK: [[B:%.*]] = zext i1 %x to i8
  37 // CHECK: store i8 [[B]], ptr [[A]]
  38 // CHECK: [[R:%.*]] = freeze i1 poison
  39 // CHECK: ret i1 [[R]]
  40   return __builtin_nondeterministic_value(x);
  41 }
  42
  43 void clang_nondet_fv( ) {
  44 // CHECK-LABEL: entry
  45 // CHECK: [[A:%.*]] = alloca <4 x float>
  46 // CHECK: [[R:%.*]] = freeze <4 x float> poison
  47 // CHECK: store <4 x float> [[R]], ptr [[A]]
  48 // CHECK: ret void
  49   float4 x = __builtin_nondeterministic_value(x);
  50 }
  51
  52 void clang_nondet_bv( ) {
  53 // CHECK: [[A:%.*]] = alloca i8
  54 // CHECK: [[V:%.*]] = freeze <4 x i1> poison
  55 // CHECK: [[SV:%.*]] = shufflevector <4 x i1> [[V]], <4 x i1> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
  56 // CHECK: [[BC:%.*]] = bitcast <8 x i1> [[SV]] to i8
  57 // CHECK: store i8 [[BC]], ptr [[A]]
  58 // CHECK: ret void
  59   bool4 x = __builtin_nondeterministic_value(x);
  60 }