clang/test/CodeGen/fp-options-to-fast-math-flags.c

   1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck -check-prefix CHECK-PRECISE %s
   2 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -menable-no-nans -emit-llvm -o - %s | FileCheck -check-prefix CHECK-NO-NANS %s
   3 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -menable-no-infs -emit-llvm -o - %s | FileCheck -check-prefix CHECK-NO-INFS %s
   4 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -ffinite-math-only -emit-llvm -o - %s | FileCheck -check-prefix CHECK-FINITE %s
   5 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fno-signed-zeros -emit-llvm -o - %s | FileCheck -check-prefix CHECK-NO-SIGNED-ZEROS %s
   6 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -mreassociate -emit-llvm -o - %s | FileCheck -check-prefix CHECK-REASSOC %s
   7 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -freciprocal-math -emit-llvm -o - %s | FileCheck -check-prefix CHECK-RECIP %s
   8 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fapprox-func -emit-llvm -o - %s | FileCheck -check-prefix CHECK-AFN %s
   9 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -funsafe-math-optimizations -emit-llvm -o - %s | FileCheck -check-prefix CHECK-UNSAFE %s
  10 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -ffast-math -emit-llvm -o - %s | FileCheck -check-prefix CHECK-FAST %s
  11
  12 float fn(float);
  13
  14 float test(float a) {
  15   return a + fn(a);
  16 }
  17
  18 // CHECK-PRECISE: [[CALL_RES:%.+]] = call float @fn(float noundef {{%.+}})
  19 // CHECK-PRECISE: {{%.+}} = fadd float {{%.+}}, [[CALL_RES]]
  20
  21 // CHECK-NO-NANS: [[CALL_RES:%.+]] = call nnan nofpclass(nan) float @fn(float noundef nofpclass(nan) {{%.+}})
  22 // CHECK-NO-NANS: {{%.+}} = fadd nnan float {{%.+}}, [[CALL_RES]]
  23
  24 // CHECK-NO-INFS: [[CALL_RES:%.+]] = call ninf nofpclass(inf) float @fn(float noundef nofpclass(inf) {{%.+}})
  25 // CHECK-NO-INFS: {{%.+}} = fadd ninf float {{%.+}}, [[CALL_RES]]
  26
  27 // CHECK-FINITE: [[CALL_RES:%.+]] = call nnan ninf nofpclass(nan inf) float @fn(float noundef nofpclass(nan inf) {{%.+}})
  28 // CHECK-FINITE: {{%.+}} = fadd nnan ninf float {{%.+}}, [[CALL_RES]]
  29
  30 // CHECK-NO-SIGNED-ZEROS: [[CALL_RES:%.+]] = call nsz float @fn(float noundef {{%.+}})
  31 // CHECK-NO-SIGNED-ZEROS: {{%.+}} = fadd nsz float {{%.+}}, [[CALL_RES]]
  32
  33 // CHECK-REASSOC: [[CALL_RES:%.+]] = call reassoc float @fn(float noundef {{%.+}})
  34 // CHECK-REASSOC: {{%.+}} = fadd reassoc float {{%.+}}, [[CALL_RES]]
  35
  36 // CHECK-RECIP: [[CALL_RES:%.+]] = call arcp float @fn(float noundef {{%.+}})
  37 // CHECK-RECIP: {{%.+}} = fadd arcp float {{%.+}}, [[CALL_RES]]
  38
  39 // CHECK-AFN: [[CALL_RES:%.+]] = call afn float @fn(float noundef {{%.+}})
  40 // CHECK-AFN: {{%.+}} = fadd afn float {{%.+}}, [[CALL_RES]]
  41
  42 // CHECK-UNSAFE: [[CALL_RES:%.+]] = call reassoc nsz arcp afn float @fn(float noundef {{%.+}})
  43 // CHECK-UNSAFE: {{%.+}} = fadd reassoc nsz arcp afn float {{%.+}}, [[CALL_RES]]
  44
  45 // CHECK-FAST: [[CALL_RES:%.+]] = call reassoc nnan ninf nsz arcp afn nofpclass(nan inf) float @fn(float noundef nofpclass(nan inf) {{%.+}})
  46 // CHECK-FAST: {{%.+}} = fadd reassoc nnan ninf nsz arcp afn float {{%.+}}, [[CALL_RES]]