clang/test/CodeGenCXX/for-loop-init-ternary-operator-statement.cpp

   1 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
   2 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s
   3
   4 // CHECK-LABEL: @_Z1fv(
   5 // CHECK-NEXT:  entry:
   6 // CHECK-NEXT:    [[RETVAL:%.*]] = alloca i32, align 4
   7 // CHECK-NEXT:    [[I:%.*]] = alloca i32, align 4
   8 // CHECK-NEXT:    [[X:%.*]] = alloca i32, align 4
   9 // CHECK-NEXT:    store i32 0, i32* [[I]], align 4
  10 // CHECK-NEXT:    br label [[FOR_COND:%.*]]
  11 // CHECK:       for.cond:
  12 // CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* [[I]], align 4
  13 // CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[TMP0]], 2
  14 // CHECK-NEXT:    [[TMP1:%.*]] = zext i1 [[CMP]] to i64
  15 // CHECK-NEXT:    [[COND:%.*]] = select i1 [[CMP]], i32 1, i32 0
  16 // CHECK-NEXT:    store i32 [[COND]], i32* [[X]], align 4
  17 // CHECK-NEXT:    [[TMP2:%.*]] = load i32, i32* [[X]], align 4
  18 // CHECK-NEXT:    [[TOBOOL:%.*]] = icmp ne i32 [[TMP2]], 0
  19 // CHECK-NEXT:    br i1 [[TOBOOL]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
  20 // CHECK:       for.body:
  21 // CHECK-NEXT:    [[TMP3:%.*]] = load i32, i32* [[X]], align 4
  22 // CHECK-NEXT:    store i32 [[TMP3]], i32* [[RETVAL]], align 4
  23 // CHECK-NEXT:    br label [[RETURN:%.*]]
  24 // CHECK:       for.inc:
  25 // CHECK-NEXT:    [[TMP4:%.*]] = load i32, i32* [[I]], align 4
  26 // CHECK-NEXT:    [[INC:%.*]] = add nsw i32 [[TMP4]], 1
  27 // CHECK-NEXT:    store i32 [[INC]], i32* [[I]], align 4
  28 // CHECK-NEXT:    br label [[FOR_COND]], !llvm.loop [[LOOP2:![0-9]+]]
  29 // CHECK:       for.end:
  30 // CHECK-NEXT:    store i32 0, i32* [[RETVAL]], align 4
  31 // CHECK-NEXT:    br label [[RETURN]]
  32 // CHECK:       return:
  33 // CHECK-NEXT:    [[TMP5:%.*]] = load i32, i32* [[RETVAL]], align 4
  34 // CHECK-NEXT:    ret i32 [[TMP5]]
  35 //
  36 int f() {
  37   for (int i = 0; int x = i < 2 ? 1 : 0; i++) {
  38     return x;
  39   }
  40   return 0;
  41 }
  42