clang/test/CodeGen/catch-alignment-assumption-attribute-alloc_align-on-function.cpp

   1 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 2
   2 // RUN: %clang_cc1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECK-NOSANITIZE
   3 // RUN: %clang_cc1 -fsanitize=alignment -fno-sanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE-NORECOVER
   4 // RUN: %clang_cc1 -fsanitize=alignment -fsanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE-RECOVER
   5 // RUN: %clang_cc1 -fsanitize=alignment -fsanitize-trap=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE-TRAP
   6
   7
   8 char **__attribute__((alloc_align(2)))
   9 // CHECK-LABEL: define dso_local noundef ptr @_Z11passthroughPPcm
  10 // CHECK-SAME: (ptr noundef [[X:%.*]], i64 noundef [[ALIGNMENT:%.*]]) #[[ATTR0:[0-9]+]] {
  11 // CHECK-NEXT:  entry:
  12 // CHECK-NEXT:    [[X_ADDR:%.*]] = alloca ptr, align 8
  13 // CHECK-NEXT:    [[ALIGNMENT_ADDR:%.*]] = alloca i64, align 8
  14 // CHECK-NEXT:    store ptr [[X]], ptr [[X_ADDR]], align 8
  15 // CHECK-NEXT:    store i64 [[ALIGNMENT]], ptr [[ALIGNMENT_ADDR]], align 8
  16 // CHECK-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
  17 // CHECK-NEXT:    ret ptr [[TMP0]]
  18 //
  19 passthrough(char **x, unsigned long alignment) {
  20   return x;
  21 }
  22
  23 // CHECK-NOSANITIZE-LABEL: define dso_local noundef ptr @_Z6callerPPc
  24 // CHECK-NOSANITIZE-SAME: (ptr noundef [[X:%.*]]) #[[ATTR0]] {
  25 // CHECK-NOSANITIZE-NEXT:  entry:
  26 // CHECK-NOSANITIZE-NEXT:    [[X_ADDR:%.*]] = alloca ptr, align 8
  27 // CHECK-NOSANITIZE-NEXT:    store ptr [[X]], ptr [[X_ADDR]], align 8
  28 // CHECK-NOSANITIZE-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
  29 // CHECK-NOSANITIZE-NEXT:    [[CALL:%.*]] = call noundef align 128 ptr @_Z11passthroughPPcm(ptr noundef [[TMP0]], i64 noundef 128)
  30 // CHECK-NOSANITIZE-NEXT:    ret ptr [[CALL]]
  31 //
  32 // CHECK-SANITIZE-NORECOVER-LABEL: define dso_local noundef ptr @_Z6callerPPc
  33 // CHECK-SANITIZE-NORECOVER-SAME: (ptr noundef [[X:%.*]]) #[[ATTR0]] {
  34 // CHECK-SANITIZE-NORECOVER-NEXT:  entry:
  35 // CHECK-SANITIZE-NORECOVER-NEXT:    [[X_ADDR:%.*]] = alloca ptr, align 8
  36 // CHECK-SANITIZE-NORECOVER-NEXT:    store ptr [[X]], ptr [[X_ADDR]], align 8
  37 // CHECK-SANITIZE-NORECOVER-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
  38 // CHECK-SANITIZE-NORECOVER-NEXT:    [[CALL:%.*]] = call noundef ptr @_Z11passthroughPPcm(ptr noundef [[TMP0]], i64 noundef 128)
  39 // CHECK-SANITIZE-NORECOVER-NEXT:    [[PTRINT:%.*]] = ptrtoint ptr [[CALL]] to i64
  40 // CHECK-SANITIZE-NORECOVER-NEXT:    [[MASKEDPTR:%.*]] = and i64 [[PTRINT]], 127
  41 // CHECK-SANITIZE-NORECOVER-NEXT:    [[MASKCOND:%.*]] = icmp eq i64 [[MASKEDPTR]], 0
  42 // CHECK-SANITIZE-NORECOVER-NEXT:    [[TMP1:%.*]] = ptrtoint ptr [[CALL]] to i64, !nosanitize !2
  43 // CHECK-SANITIZE-NORECOVER-NEXT:    br i1 [[MASKCOND]], label [[CONT:%.*]], label [[HANDLER_ALIGNMENT_ASSUMPTION:%.*]], !prof [[PROF3:![0-9]+]], !nosanitize !2
  44 // CHECK-SANITIZE-NORECOVER:       handler.alignment_assumption:
  45 // CHECK-SANITIZE-NORECOVER-NEXT:    call void @__ubsan_handle_alignment_assumption_abort(ptr @[[GLOB1:[0-9]+]], i64 [[TMP1]], i64 128, i64 0) #[[ATTR3:[0-9]+]], !nosanitize !2
  46 // CHECK-SANITIZE-NORECOVER-NEXT:    unreachable, !nosanitize !2
  47 // CHECK-SANITIZE-NORECOVER:       cont:
  48 // CHECK-SANITIZE-NORECOVER-NEXT:    call void @llvm.assume(i1 true) [ "align"(ptr [[CALL]], i64 128) ]
  49 // CHECK-SANITIZE-NORECOVER-NEXT:    ret ptr [[CALL]]
  50 //
  51 // CHECK-SANITIZE-RECOVER-LABEL: define dso_local noundef ptr @_Z6callerPPc
  52 // CHECK-SANITIZE-RECOVER-SAME: (ptr noundef [[X:%.*]]) #[[ATTR0]] {
  53 // CHECK-SANITIZE-RECOVER-NEXT:  entry:
  54 // CHECK-SANITIZE-RECOVER-NEXT:    [[X_ADDR:%.*]] = alloca ptr, align 8
  55 // CHECK-SANITIZE-RECOVER-NEXT:    store ptr [[X]], ptr [[X_ADDR]], align 8
  56 // CHECK-SANITIZE-RECOVER-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
  57 // CHECK-SANITIZE-RECOVER-NEXT:    [[CALL:%.*]] = call noundef ptr @_Z11passthroughPPcm(ptr noundef [[TMP0]], i64 noundef 128)
  58 // CHECK-SANITIZE-RECOVER-NEXT:    [[PTRINT:%.*]] = ptrtoint ptr [[CALL]] to i64
  59 // CHECK-SANITIZE-RECOVER-NEXT:    [[MASKEDPTR:%.*]] = and i64 [[PTRINT]], 127
  60 // CHECK-SANITIZE-RECOVER-NEXT:    [[MASKCOND:%.*]] = icmp eq i64 [[MASKEDPTR]], 0
  61 // CHECK-SANITIZE-RECOVER-NEXT:    [[TMP1:%.*]] = ptrtoint ptr [[CALL]] to i64, !nosanitize !2
  62 // CHECK-SANITIZE-RECOVER-NEXT:    br i1 [[MASKCOND]], label [[CONT:%.*]], label [[HANDLER_ALIGNMENT_ASSUMPTION:%.*]], !prof [[PROF3:![0-9]+]], !nosanitize !2
  63 // CHECK-SANITIZE-RECOVER:       handler.alignment_assumption:
  64 // CHECK-SANITIZE-RECOVER-NEXT:    call void @__ubsan_handle_alignment_assumption(ptr @[[GLOB1:[0-9]+]], i64 [[TMP1]], i64 128, i64 0) #[[ATTR3:[0-9]+]], !nosanitize !2
  65 // CHECK-SANITIZE-RECOVER-NEXT:    br label [[CONT]], !nosanitize !2
  66 // CHECK-SANITIZE-RECOVER:       cont:
  67 // CHECK-SANITIZE-RECOVER-NEXT:    call void @llvm.assume(i1 true) [ "align"(ptr [[CALL]], i64 128) ]
  68 // CHECK-SANITIZE-RECOVER-NEXT:    ret ptr [[CALL]]
  69 //
  70 // CHECK-SANITIZE-TRAP-LABEL: define dso_local noundef ptr @_Z6callerPPc
  71 // CHECK-SANITIZE-TRAP-SAME: (ptr noundef [[X:%.*]]) #[[ATTR0]] {
  72 // CHECK-SANITIZE-TRAP-NEXT:  entry:
  73 // CHECK-SANITIZE-TRAP-NEXT:    [[X_ADDR:%.*]] = alloca ptr, align 8
  74 // CHECK-SANITIZE-TRAP-NEXT:    store ptr [[X]], ptr [[X_ADDR]], align 8
  75 // CHECK-SANITIZE-TRAP-NEXT:    [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
  76 // CHECK-SANITIZE-TRAP-NEXT:    [[CALL:%.*]] = call noundef ptr @_Z11passthroughPPcm(ptr noundef [[TMP0]], i64 noundef 128)
  77 // CHECK-SANITIZE-TRAP-NEXT:    [[PTRINT:%.*]] = ptrtoint ptr [[CALL]] to i64
  78 // CHECK-SANITIZE-TRAP-NEXT:    [[MASKEDPTR:%.*]] = and i64 [[PTRINT]], 127
  79 // CHECK-SANITIZE-TRAP-NEXT:    [[MASKCOND:%.*]] = icmp eq i64 [[MASKEDPTR]], 0
  80 // CHECK-SANITIZE-TRAP-NEXT:    [[TMP1:%.*]] = ptrtoint ptr [[CALL]] to i64, !nosanitize !2
  81 // CHECK-SANITIZE-TRAP-NEXT:    br i1 [[MASKCOND]], label [[CONT:%.*]], label [[TRAP:%.*]], !nosanitize !2
  82 // CHECK-SANITIZE-TRAP:       trap:
  83 // CHECK-SANITIZE-TRAP-NEXT:    call void @llvm.ubsantrap(i8 23) #[[ATTR3:[0-9]+]], !nosanitize !2
  84 // CHECK-SANITIZE-TRAP-NEXT:    unreachable, !nosanitize !2
  85 // CHECK-SANITIZE-TRAP:       cont:
  86 // CHECK-SANITIZE-TRAP-NEXT:    call void @llvm.assume(i1 true) [ "align"(ptr [[CALL]], i64 128) ]
  87 // CHECK-SANITIZE-TRAP-NEXT:    ret ptr [[CALL]]
  88 //
  89 char **caller(char **x) {
  90 #line 100
  91   return passthrough(x, 128);
  92 }