351241c83e
CodeGen-level implementation. Instead of adding an attribute to clang's FunctionDecl, add the IR attribute directly. This means a module built with this flag is now compatible with code built without it and vice versa. This change also results in the 'noalias' attribute no longer being added to calls to operator new in the IR; it's now only added to the declaration. It also fixes a bug where we failed to add the attribute to the 'nothrow' versions (because we didn't implicitly declare them, there was no good time to inject a fake attribute). llvm-svn: 265728
58 lines
2.8 KiB
C++
58 lines
2.8 KiB
C++
// 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
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// rdar://16254558
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typedef float AVX2Float __attribute__((__vector_size__(32)));
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volatile float TestAlign(void)
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{
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volatile AVX2Float *p = new AVX2Float;
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*p = *p;
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AVX2Float r = *p;
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return r[0];
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}
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// CHECK: [[R:%.*]] = alloca <8 x float>, align 32
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// CHECK-NEXT: [[CALL:%.*]] = call i8* @_Znwm(i64 32)
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// CHECK-NEXT: [[ZERO:%.*]] = bitcast i8* [[CALL]] to <8 x float>*
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// CHECK-NEXT: store <8 x float>* [[ZERO]], <8 x float>** [[P:%.*]], align 8
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// CHECK-NEXT: [[ONE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
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// CHECK-NEXT: [[TWO:%.*]] = load volatile <8 x float>, <8 x float>* [[ONE]], align 16
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// CHECK-NEXT: [[THREE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
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// CHECK-NEXT: store volatile <8 x float> [[TWO]], <8 x float>* [[THREE]], align 16
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// CHECK-NEXT: [[FOUR:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
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// CHECK-NEXT: [[FIVE:%.*]] = load volatile <8 x float>, <8 x float>* [[FOUR]], align 16
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// CHECK-NEXT: store <8 x float> [[FIVE]], <8 x float>* [[R]], align 32
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// CHECK-NEXT: [[SIX:%.*]] = load <8 x float>, <8 x float>* [[R]], align 32
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// CHECK-NEXT: [[VECEXT:%.*]] = extractelement <8 x float> [[SIX]], i32 0
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// CHECK-NEXT: ret float [[VECEXT]]
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typedef float AVX2Float_Explicitly_aligned __attribute__((__vector_size__(32))) __attribute__((aligned (32)));
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typedef AVX2Float_Explicitly_aligned AVX2Float_indirect;
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typedef AVX2Float_indirect AVX2Float_use_existing_align;
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volatile float TestAlign2(void)
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{
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volatile AVX2Float_use_existing_align *p = new AVX2Float_use_existing_align;
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*p = *p;
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AVX2Float_use_existing_align r = *p;
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return r[0];
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}
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// CHECK: [[R:%.*]] = alloca <8 x float>, align 32
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// CHECK-NEXT: [[CALL:%.*]] = call i8* @_Znwm(i64 32)
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// CHECK-NEXT: [[ZERO:%.*]] = bitcast i8* [[CALL]] to <8 x float>*
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// CHECK-NEXT: store <8 x float>* [[ZERO]], <8 x float>** [[P:%.*]], align 8
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// CHECK-NEXT: [[ONE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
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// CHECK-NEXT: [[TWO:%.*]] = load volatile <8 x float>, <8 x float>* [[ONE]], align 32
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// CHECK-NEXT: [[THREE:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
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// CHECK-NEXT: store volatile <8 x float> [[TWO]], <8 x float>* [[THREE]], align 32
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// CHECK-NEXT: [[FOUR:%.*]] = load <8 x float>*, <8 x float>** [[P]], align 8
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// CHECK-NEXT: [[FIVE:%.*]] = load volatile <8 x float>, <8 x float>* [[FOUR]], align 32
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// CHECK-NEXT: store <8 x float> [[FIVE]], <8 x float>* [[R]], align 32
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// CHECK-NEXT: [[SIX:%.*]] = load <8 x float>, <8 x float>* [[R]], align 32
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// CHECK-NEXT: [[VECEXT:%.*]] = extractelement <8 x float> [[SIX]], i32 0
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// CHECK-NEXT: ret float [[VECEXT]]
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