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
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s
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// CHECK-LABEL: define void @_Z2fni
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void fn(int n) {
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// CHECK: icmp ult i{{32|64}} %{{[^ ]+}}, 3
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// CHECK: store i32 1
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// CHECK: store i32 2
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// CHECK: store i32 3
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// CHECK: sub {{.*}}, 12
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// CHECK: call void @llvm.memset
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new int[n] { 1, 2, 3 };
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}
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// CHECK-LABEL: define void @_Z15const_underflowv
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void const_underflow() {
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// CHECK-NOT: icmp ult i{{32|64}} %{{[^ ]+}}, 3
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// CHECK: call i8* @_Zna{{.}}(i{{32|64}} -1)
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new int[2] { 1, 2, 3 };
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}
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// CHECK-LABEL: define void @_Z11const_exactv
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void const_exact() {
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// CHECK-NOT: icmp ult i{{32|64}} %{{[^ ]+}}, 3
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// CHECK-NOT: icmp eq i32*
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new int[3] { 1, 2, 3 };
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}
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// CHECK-LABEL: define void @_Z16const_sufficientv
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void const_sufficient() {
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// CHECK-NOT: icmp ult i{{32|64}} %{{[^ ]+}}, 3
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new int[4] { 1, 2, 3 };
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// CHECK: ret void
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}
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// CHECK-LABEL: define void @_Z22check_array_value_initv
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void check_array_value_init() {
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struct S;
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new (int S::*[3][4][5]) ();
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// CHECK: call i8* @_Zna{{.}}(i{{32 240|64 480}})
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// CHECK: getelementptr inbounds i{{32|64}}, i{{32|64}}* {{.*}}, i{{32|64}} 60
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// CHECK: phi
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// CHECK: store i{{32|64}} -1,
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// CHECK: getelementptr inbounds i{{32|64}}, i{{32|64}}* {{.*}}, i{{32|64}} 1
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// CHECK: icmp eq
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// CHECK: br i1
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}
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