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      1 // RUN: %clang_cc1 -x c++ %s -O0 -triple=x86_64-apple-darwin -target-feature +avx2 -fmax-type-align=16 -emit-llvm -o - -Werror | FileCheck %s
      2 // rdar://16254558
      3 
      4 typedef float AVX2Float __attribute__((__vector_size__(32)));
      5 
      6 
      7 volatile float TestAlign(void)
      8 {
      9        volatile AVX2Float *p = new AVX2Float;
     10         *p = *p;
     11         AVX2Float r = *p;
     12         return r[0];
     13 }
     14 
     15 // CHECK: [[R:%.*]] = alloca <8 x float>, align 32
     16 // CHECK-NEXT:  [[CALL:%.*]] = call i8* @_Znwm(i64 32)
     17 // CHECK-NEXT:  [[ZERO:%.*]] = bitcast i8* [[CALL]] to <8 x float>*
     18 // CHECK-NEXT:  store <8 x float>* [[ZERO]], <8 x float>** [[P:%.*]], align 8
     19 // CHECK-NEXT:  [[ONE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
     20 // CHECK-NEXT:  [[TWO:%.*]] = load volatile <8 x float>, <8 x float>* [[ONE]], align 16
     21 // CHECK-NEXT:  [[THREE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
     22 // CHECK-NEXT:  store volatile <8 x float> [[TWO]], <8 x float>* [[THREE]], align 16
     23 // CHECK-NEXT:  [[FOUR:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
     24 // CHECK-NEXT:  [[FIVE:%.*]] = load volatile <8 x float>, <8 x float>* [[FOUR]], align 16
     25 // CHECK-NEXT:  store <8 x float> [[FIVE]], <8 x float>* [[R]], align 32
     26 // CHECK-NEXT:  [[SIX:%.*]] = load <8 x float>, <8 x float>* [[R]], align 32
     27 // CHECK-NEXT:  [[VECEXT:%.*]] = extractelement <8 x float> [[SIX]], i32 0
     28 // CHECK-NEXT:  ret float [[VECEXT]]
     29 
     30 typedef float AVX2Float_Explicitly_aligned __attribute__((__vector_size__(32))) __attribute__((aligned (32)));
     31 
     32 typedef AVX2Float_Explicitly_aligned AVX2Float_indirect;
     33 
     34 typedef AVX2Float_indirect AVX2Float_use_existing_align;
     35 
     36 volatile float TestAlign2(void)
     37 {
     38        volatile AVX2Float_use_existing_align *p = new AVX2Float_use_existing_align;
     39         *p = *p;
     40         AVX2Float_use_existing_align r = *p;
     41         return r[0];
     42 }
     43 
     44 // CHECK: [[R:%.*]] = alloca <8 x float>, align 32
     45 // CHECK-NEXT:  [[CALL:%.*]] = call i8* @_Znwm(i64 32)
     46 // CHECK-NEXT:  [[ZERO:%.*]] = bitcast i8* [[CALL]] to <8 x float>*
     47 // CHECK-NEXT:  store <8 x float>* [[ZERO]], <8 x float>** [[P:%.*]], align 8
     48 // CHECK-NEXT:  [[ONE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
     49 // CHECK-NEXT:  [[TWO:%.*]] = load volatile <8 x float>, <8 x float>* [[ONE]], align 32
     50 // CHECK-NEXT:  [[THREE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
     51 // CHECK-NEXT:  store volatile <8 x float> [[TWO]], <8 x float>* [[THREE]], align 32
     52 // CHECK-NEXT:  [[FOUR:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
     53 // CHECK-NEXT:  [[FIVE:%.*]] = load volatile <8 x float>, <8 x float>* [[FOUR]], align 32
     54 // CHECK-NEXT:  store <8 x float> [[FIVE]], <8 x float>* [[R]], align 32
     55 // CHECK-NEXT:  [[SIX:%.*]] = load <8 x float>, <8 x float>* [[R]], align 32
     56 // CHECK-NEXT:  [[VECEXT:%.*]] = extractelement <8 x float> [[SIX]], i32 0
     57 // CHECK-NEXT:  ret float [[VECEXT]]
     58