clang/test/Profile/c-mcdc-nested-ternary.c

   1 // RUN: %clang_cc1 -triple %itanium_abi_triple %s -o - -emit-llvm -fprofile-instrument=clang -fcoverage-mapping -fcoverage-mcdc | FileCheck %s -check-prefix=MCDC
   2 // RUN: %clang_cc1 -triple %itanium_abi_triple %s -o - -emit-llvm -fprofile-instrument=clang -fcoverage-mapping | FileCheck %s -check-prefix=NOMCDC
   3
   4 int test(int b, int c, int d, int e, int f) {
   5   return ((b ? c : d) && e && f);
   6 }
   7
   8 // NOMCDC-NOT: %mcdc.addr
   9 // NOMCDC-NOT: __profbm_test
  10
  11 // MCDC BOOKKEEPING.
  12 // MCDC: @__profbm_test = private global [1 x i8] zeroinitializer
  13
  14 // ALLOCATE MCDC TEMP AND ZERO IT.
  15 // MCDC-LABEL: @test(
  16 // MCDC: %mcdc.addr = alloca i32, align 4
  17 // MCDC: store i32 0, ptr %mcdc.addr, align 4
  18
  19 // TERNARY TRUE SHOULD SHIFT ID = 0 FOR CONDITION 'c'.
  20 // MCDC-LABEL: cond.true:
  21 // MCDC:  %[[LAB1:[0-9]+]] = load i32, ptr %c.addr, align 4
  22 // MCDC-DAG:  %[[BOOL:tobool[0-9]*]] = icmp ne i32 %[[LAB1]], 0
  23 // MCDC-DAG:  %[[TEMP:mcdc.*]] = load i32, ptr %mcdc.addr, align 4
  24 // MCDC-DAG:  %[[LAB2:[0-9]+]] = add i32 %[[TEMP]], 0
  25 // MCDC-DAG:  %[[LAB3:[0-9]+]] = add i32 %[[TEMP]], 0
  26 // MCDC-DAG:  %[[LAB4:[0-9]+]] = select i1 %[[BOOL]], i32 %[[LAB2]], i32 %[[LAB3]]
  27 // MCDC-DAG:  store i32 %[[LAB4]], ptr %mcdc.addr, align 4
  28
  29 // TERNARY FALSE SHOULD SHIFT ID = 0 FOR CONDITION 'd'.
  30 // MCDC-LABEL: cond.false:
  31 // MCDC:  %[[LAB1:[0-9]+]] = load i32, ptr %d.addr, align 4
  32 // MCDC-DAG:  %[[BOOL:tobool[0-9]*]] = icmp ne i32 %[[LAB1]], 0
  33 // MCDC-DAG:  %[[TEMP:mcdc.*]] = load i32, ptr %mcdc.addr, align 4
  34 // MCDC-DAG:  %[[LAB2:[0-9]+]] = add i32 %[[TEMP]], 0
  35 // MCDC-DAG:  %[[LAB3:[0-9]+]] = add i32 %[[TEMP]], 0
  36 // MCDC-DAG:  %[[LAB4:[0-9]+]] = select i1 %[[BOOL]], i32 %[[LAB2]], i32 %[[LAB3]]
  37 // MCDC-DAG:  store i32 %[[LAB4]], ptr %mcdc.addr, align 4
  38
  39 // SHIFT SECOND CONDITION WITH ID = 2.
  40 // MCDC:  %[[LAB1:[0-9]+]] = load i32, ptr %e.addr, align 4
  41 // MCDC-DAG:  %[[BOOL:tobool[0-9]*]] = icmp ne i32 %[[LAB1]], 0
  42 // MCDC-DAG:  %[[TEMP:mcdc.*]] = load i32, ptr %mcdc.addr, align 4
  43 // MCDC-DAG:  %[[LAB2:[0-9]+]] = add i32 %[[TEMP]], 0
  44 // MCDC-DAG:  %[[LAB3:[0-9]+]] = add i32 %[[TEMP]], 1
  45 // MCDC-DAG:  %[[LAB4:[0-9]+]] = select i1 %[[BOOL]], i32 %[[LAB2]], i32 %[[LAB3]]
  46 // MCDC-DAG:  store i32 %[[LAB4]], ptr %mcdc.addr, align 4
  47
  48 // SHIFT THIRD CONDITION WITH ID = 1.
  49 // MCDC:  %[[LAB1:[0-9]+]] = load i32, ptr %f.addr, align 4
  50 // MCDC-DAG:  %[[BOOL:tobool[0-9]*]] = icmp ne i32 %[[LAB1]], 0
  51 // MCDC-DAG:  %[[TEMP:mcdc.*]] = load i32, ptr %mcdc.addr, align 4
  52 // MCDC-DAG:  %[[LAB2:[0-9]+]] = add i32 %[[TEMP]], 3
  53 // MCDC-DAG:  %[[LAB3:[0-9]+]] = add i32 %[[TEMP]], 2
  54 // MCDC-DAG:  %[[LAB4:[0-9]+]] = select i1 %[[BOOL]], i32 %[[LAB2]], i32 %[[LAB3]]
  55 // MCDC-DAG:  store i32 %[[LAB4]], ptr %mcdc.addr, align 4
  56
  57 // UPDATE FINAL BITMASK WITH RESULT.
  58 // MCDC-DAG:  %[[TEMP0:mcdc.temp[0-9]*]] = load i32, ptr %mcdc.addr, align 4
  59 // MCDC:  %[[TEMP:[0-9]+]] = add i32 %[[TEMP0]], 0
  60 // MCDC:  %[[LAB1:[0-9]+]] = lshr i32 %[[TEMP]], 3
  61 // MCDC:  %[[LAB4:[0-9]+]] = getelementptr inbounds i8, ptr @__profbm_test, i32 %[[LAB1]]
  62 // MCDC:  %[[LAB5:[0-9]+]] = and i32 %[[TEMP]], 7
  63 // MCDC:  %[[LAB6:[0-9]+]] = trunc i32 %[[LAB5]] to i8
  64 // MCDC:  %[[LAB7:[0-9]+]] = shl i8 1, %[[LAB6]]
  65 // MCDC:  %[[BITS:.+]] = load i8, ptr %[[LAB4]], align 1
  66 // MCDC:  %[[LAB8:[0-9]+]] = or i8 %[[BITS]], %[[LAB7]]
  67 // MCDC:  store i8 %[[LAB8]], ptr %[[LAB4]], align 1