7bfd5cb7be
This is a follow on from a similar LLVM commit: r253511. Note, this was reviewed (and more details are in) http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html These intrinsics currently have an explicit alignment argument which is required to be a constant integer. It represents the alignment of the source and dest, and so must be the minimum of those. This change allows source and dest to each have their own alignments by using the alignment attribute on their arguments. The alignment argument itself is removed. The only code change to clang is hidden in CGBuilder.h which now passes both dest and source alignment to IRBuilder, instead of taking the minimum of dest and source alignments. Reviewed by Hal Finkel. llvm-svn: 253512
113 lines
2.4 KiB
C++
113 lines
2.4 KiB
C++
// RUN: %clang_cc1 -triple i386-unknown-unknown -std=c++11 -S -emit-llvm -o - %s -Wno-address-of-temporary | FileCheck %s
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// CHECK: @[[THREE_NULL_MEMPTRS:.*]] = private constant [3 x i32] [i32 -1, i32 -1, i32 -1]
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struct A { int a[1]; };
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typedef A x[];
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int f() {
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x{{{1}}};
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// CHECK-LABEL: define i32 @_Z1fv
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// CHECK: store i32 1
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// (It's okay if the output changes here, as long as we don't crash.)
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return 0;
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}
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namespace ValueInitArrayOfMemPtr {
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struct S {};
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typedef int (S::*p);
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typedef p a[3];
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void f(const a &);
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struct Agg1 {
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int n;
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p x;
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};
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struct Agg2 {
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int n;
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a x;
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};
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struct S1 {
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p x;
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S1();
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};
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// CHECK-LABEL: define void @_ZN22ValueInitArrayOfMemPtr1fEi
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void f(int n) {
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Agg1 a = { n };
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// CHECK: store i32 -1,
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Agg2 b = { n };
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %{{.*}}, i8* align 4 bitcast ([3 x i32]* @[[THREE_NULL_MEMPTRS]] to i8*), i32 12, i1 false)
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}
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// Test dynamic initialization.
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// CHECK-LABEL: define void @_ZN22ValueInitArrayOfMemPtr1gEMNS_1SEi
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void g(p ptr) {
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// CHECK: store i32 -1,
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f(a{ptr});
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}
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}
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namespace array_dtor {
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struct S { S(); ~S(); };
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using T = S[3];
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void f(const T &);
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void f(T *);
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// CHECK-LABEL: define void @_ZN10array_dtor1gEv(
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void g() {
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// CHECK: %[[ARRAY:.*]] = alloca [3 x
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// CHECK: br
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// Construct loop.
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// CHECK: call void @_ZN10array_dtor1SC1Ev(
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// CHECK: br i1
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// CHECK: call void @_ZN10array_dtor1fERA3_KNS_1SE(
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// CHECK: br
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// Destruct loop.
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// CHECK: call void @_ZN10array_dtor1SD1Ev(
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// CHECK: br i1
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f(T{});
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// CHECK: ret void
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}
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// CHECK-LABEL: define void @_ZN10array_dtor1hEv(
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void h() {
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// CHECK: %[[ARRAY:.*]] = alloca [3 x
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// CHECK: br
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// CHECK: call void @_ZN10array_dtor1SC1Ev(
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// CHECK: br i1
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T &&t = T{};
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// CHECK: call void @_ZN10array_dtor1fERA3_KNS_1SE(
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// CHECK: br
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f(t);
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// CHECK: call void @_ZN10array_dtor1SD1Ev(
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// CHECK: br i1
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// CHECK: ret void
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}
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// CHECK-LABEL: define void @_ZN10array_dtor1iEv(
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void i() {
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// CHECK: %[[ARRAY:.*]] = alloca [3 x
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// CHECK: br
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// CHECK: call void @_ZN10array_dtor1SC1Ev(
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// CHECK: br i1
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// CHECK: call void @_ZN10array_dtor1fEPA3_NS_1SE(
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// CHECK: br
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// CHECK: call void @_ZN10array_dtor1SD1Ev(
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// CHECK: br i1
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f(&T{});
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// CHECK: ret void
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}
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}
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