clang/test/CodeGen/builtins-multiprecision.c

   1 // RUN: %clang_cc1 -triple "i686-unknown-unknown"   -emit-llvm -x c %s -o - -O3 | FileCheck %s
   2 // RUN: %clang_cc1 -triple "x86_64-unknown-unknown" -emit-llvm -x c %s -o - -O3 | FileCheck %s
   3 // RUN: %clang_cc1 -triple "x86_64-mingw32"         -emit-llvm -x c %s -o - -O3 | FileCheck %s
   4
   5 unsigned char test_addcb(unsigned char x, unsigned char y,
   6                          unsigned char carryin, unsigned char *z) {
   7   // CHECK: @test_addcb
   8   // CHECK: %{{.+}} = {{.*}} call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %x, i8 %y)
   9   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 1
  10   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 0
  11   // CHECK: %{{.+}} = {{.*}} call { i8, i1 } @llvm.uadd.with.overflow.i8(i8 %{{.+}}, i8 %carryin)
  12   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 1
  13   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 0
  14   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
  15   // CHECK: %{{.+}} = zext i1 %{{.+}} to i8
  16   // CHECK: store i8 %{{.+}}, ptr %z, align 1
  17
  18   unsigned char carryout;
  19   *z = __builtin_addcb(x, y, carryin, &carryout);
  20
  21   return carryout;
  22 }
  23
  24 unsigned short test_addcs(unsigned short x, unsigned short y,
  25                           unsigned short carryin, unsigned short *z) {
  26   // CHECK: @test_addcs
  27   // CHECK: %{{.+}} = {{.*}} call { i16, i1 } @llvm.uadd.with.overflow.i16(i16 %x, i16 %y)
  28   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 1
  29   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 0
  30   // CHECK: %{{.+}} = {{.*}} call { i16, i1 } @llvm.uadd.with.overflow.i16(i16 %{{.+}}, i16 %carryin)
  31   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 1
  32   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 0
  33   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
  34   // CHECK: %{{.+}} = zext i1 %{{.+}} to i16
  35   // CHECK: store i16 %{{.+}}, ptr %z, align 2
  36
  37   unsigned short carryout;
  38   *z = __builtin_addcs(x, y, carryin, &carryout);
  39
  40   return carryout;
  41 }
  42
  43 unsigned test_addc(unsigned x, unsigned y, unsigned carryin, unsigned *z) {
  44   // CHECK: @test_addc
  45   // CHECK: %{{.+}} = {{.*}} call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %x, i32 %y)
  46   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 1
  47   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 0
  48   // CHECK: %{{.+}} = {{.*}} call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %{{.+}}, i32 %carryin)
  49   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 1
  50   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 0
  51   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
  52   // CHECK: %{{.+}} = zext i1 %{{.+}} to i32
  53   // CHECK: store i32 %{{.+}}, ptr %z, align 4
  54   unsigned carryout;
  55   *z = __builtin_addc(x, y, carryin, &carryout);
  56
  57   return carryout;
  58 }
  59
  60 unsigned long test_addcl(unsigned long x, unsigned long y,
  61                          unsigned long carryin, unsigned long *z) {
  62   // long is i32 on i686, i64 on x86_64.
  63   // CHECK: @test_addcl([[UL:i32|i64]] noundef %x
  64   // CHECK: %{{.+}} = {{.*}} call { [[UL]], i1 } @llvm.uadd.with.overflow.[[UL]]([[UL]] %x, [[UL]] %y)
  65   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 1
  66   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 0
  67   // CHECK: %{{.+}} = {{.*}} call { [[UL]], i1 } @llvm.uadd.with.overflow.[[UL]]([[UL]] %{{.+}}, [[UL]] %carryin)
  68   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 1
  69   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 0
  70   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
  71   // CHECK: %{{.+}} = zext i1 %{{.+}} to [[UL]]
  72   // CHECK: store [[UL]] %{{.+}}, ptr %z
  73   unsigned long carryout;
  74   *z = __builtin_addcl(x, y, carryin, &carryout);
  75
  76   return carryout;
  77 }
  78
  79 unsigned long long test_addcll(unsigned long long x, unsigned long long y,
  80                                unsigned long long carryin,
  81                                unsigned long long *z) {
  82   // CHECK: @test_addcll
  83   // CHECK: %{{.+}} = {{.*}} call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %x, i64 %y)
  84   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 1
  85   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 0
  86   // CHECK: %{{.+}} = {{.*}} call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %{{.+}}, i64 %carryin)
  87   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 1
  88   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 0
  89   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
  90   // CHECK: %{{.+}} = zext i1 %{{.+}} to i64
  91   // CHECK: store i64 %{{.+}}, ptr %z
  92   unsigned long long carryout;
  93   *z = __builtin_addcll(x, y, carryin, &carryout);
  94
  95   return carryout;
  96 }
  97
  98 unsigned char test_subcb(unsigned char x, unsigned char y,
  99                          unsigned char carryin, unsigned char *z) {
 100   // CHECK: @test_subcb
 101   // CHECK: %{{.+}} = {{.*}} call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %x, i8 %y)
 102   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 1
 103   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 0
 104   // CHECK: %{{.+}} = {{.*}} call { i8, i1 } @llvm.usub.with.overflow.i8(i8 %{{.+}}, i8 %carryin)
 105   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 1
 106   // CHECK: %{{.+}} = extractvalue { i8, i1 } %{{.+}}, 0
 107   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
 108   // CHECK: %{{.+}} = zext i1 %{{.+}} to i8
 109   // CHECK: store i8 %{{.+}}, ptr %z, align 1
 110
 111   unsigned char carryout;
 112   *z = __builtin_subcb(x, y, carryin, &carryout);
 113
 114   return carryout;
 115 }
 116
 117 unsigned short test_subcs(unsigned short x, unsigned short y,
 118                           unsigned short carryin, unsigned short *z) {
 119   // CHECK: @test_subcs
 120   // CHECK: %{{.+}} = {{.*}} call { i16, i1 } @llvm.usub.with.overflow.i16(i16 %x, i16 %y)
 121   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 1
 122   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 0
 123   // CHECK: %{{.+}} = {{.*}} call { i16, i1 } @llvm.usub.with.overflow.i16(i16 %{{.+}}, i16 %carryin)
 124   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 1
 125   // CHECK: %{{.+}} = extractvalue { i16, i1 } %{{.+}}, 0
 126   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
 127   // CHECK: %{{.+}} = zext i1 %{{.+}} to i16
 128   // CHECK: store i16 %{{.+}}, ptr %z, align 2
 129
 130   unsigned short carryout;
 131   *z = __builtin_subcs(x, y, carryin, &carryout);
 132
 133   return carryout;
 134 }
 135
 136 unsigned test_subc(unsigned x, unsigned y, unsigned carryin, unsigned *z) {
 137   // CHECK: @test_subc
 138   // CHECK: %{{.+}} = {{.*}} call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %x, i32 %y)
 139   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 1
 140   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 0
 141   // CHECK: %{{.+}} = {{.*}} call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %{{.+}}, i32 %carryin)
 142   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 1
 143   // CHECK: %{{.+}} = extractvalue { i32, i1 } %{{.+}}, 0
 144   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
 145   // CHECK: %{{.+}} = zext i1 %{{.+}} to i32
 146   // CHECK: store i32 %{{.+}}, ptr %z, align 4
 147   unsigned carryout;
 148   *z = __builtin_subc(x, y, carryin, &carryout);
 149
 150   return carryout;
 151 }
 152
 153 unsigned long test_subcl(unsigned long x, unsigned long y,
 154                          unsigned long carryin, unsigned long *z) {
 155   // CHECK: @test_subcl([[UL:i32|i64]] noundef %x
 156   // CHECK: %{{.+}} = {{.*}} call { [[UL]], i1 } @llvm.usub.with.overflow.[[UL]]([[UL]] %x, [[UL]] %y)
 157   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 1
 158   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 0
 159   // CHECK: %{{.+}} = {{.*}} call { [[UL]], i1 } @llvm.usub.with.overflow.[[UL]]([[UL]] %{{.+}}, [[UL]] %carryin)
 160   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 1
 161   // CHECK: %{{.+}} = extractvalue { [[UL]], i1 } %{{.+}}, 0
 162   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
 163   // CHECK: %{{.+}} = zext i1 %{{.+}} to [[UL]]
 164   // CHECK: store [[UL]] %{{.+}}, ptr %z
 165   unsigned long carryout;
 166   *z = __builtin_subcl(x, y, carryin, &carryout);
 167
 168   return carryout;
 169 }
 170
 171 unsigned long long test_subcll(unsigned long long x, unsigned long long y,
 172                                unsigned long long carryin,
 173                                unsigned long long *z) {
 174   // CHECK: @test_subcll
 175   // CHECK: %{{.+}} = {{.*}} call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %x, i64 %y)
 176   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 1
 177   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 0
 178   // CHECK: %{{.+}} = {{.*}} call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %{{.+}}, i64 %carryin)
 179   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 1
 180   // CHECK: %{{.+}} = extractvalue { i64, i1 } %{{.+}}, 0
 181   // CHECK: %{{.+}} = or i1 %{{.+}}, %{{.+}}
 182   // CHECK: %{{.+}} = zext i1 %{{.+}} to i64
 183   // CHECK: store i64 %{{.+}}, ptr %z
 184   unsigned long long carryout;
 185   *z = __builtin_subcll(x, y, carryin, &carryout);
 186
 187   return carryout;
 188 }