clang/test/CodeGen/assume-aligned-and-alloc-align-attributes.c

   1 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
   2 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
   3
   4 void *my_aligned_alloc(int size, int alignment) __attribute__((assume_aligned(32), alloc_align(2)));
   5
   6 // CHECK-LABEL: @t0_immediate0(
   7 // CHECK-NEXT:  entry:
   8 // CHECK-NEXT:    [[CALL:%.*]] = call align 32 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef 16)
   9 // CHECK-NEXT:    ret ptr [[CALL]]
  10 //
  11 void *t0_immediate0(void) {
  12   return my_aligned_alloc(320, 16);
  13 };
  14
  15 // CHECK-LABEL: @t1_immediate1(
  16 // CHECK-NEXT:  entry:
  17 // CHECK-NEXT:    [[CALL:%.*]] = call align 32 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef 32)
  18 // CHECK-NEXT:    ret ptr [[CALL]]
  19 //
  20 void *t1_immediate1(void) {
  21   return my_aligned_alloc(320, 32);
  22 };
  23
  24 // CHECK-LABEL: @t2_immediate2(
  25 // CHECK-NEXT:  entry:
  26 // CHECK-NEXT:    [[CALL:%.*]] = call align 64 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef 64)
  27 // CHECK-NEXT:    ret ptr [[CALL]]
  28 //
  29 void *t2_immediate2(void) {
  30   return my_aligned_alloc(320, 64);
  31 };
  32
  33 // CHECK-LABEL: @t3_variable(
  34 // CHECK-NEXT:  entry:
  35 // CHECK-NEXT:    [[ALIGNMENT_ADDR:%.*]] = alloca i32, align 4
  36 // CHECK-NEXT:    store i32 [[ALIGNMENT:%.*]], ptr [[ALIGNMENT_ADDR]], align 4
  37 // CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ALIGNMENT_ADDR]], align 4
  38 // CHECK-NEXT:    [[CALL:%.*]] = call align 32 ptr @my_aligned_alloc(i32 noundef 320, i32 noundef [[TMP0]])
  39 // CHECK-NEXT:    [[CASTED_ALIGN:%.*]] = zext i32 [[TMP0]] to i64
  40 // CHECK-NEXT:    call void @llvm.assume(i1 true) [ "align"(ptr [[CALL]], i64 [[CASTED_ALIGN]]) ]
  41 // CHECK-NEXT:    ret ptr [[CALL]]
  42 //
  43 void *t3_variable(int alignment) {
  44   return my_aligned_alloc(320, alignment);
  45 };