c8bdc8db73
Summary: This change is step three in the series of changes to remove alignment argument from memcpy/memmove/memset in favour of alignment attributes. Steps: Step 1) Remove alignment parameter and create alignment parameter attributes for memcpy/memmove/memset. ( rL322965, rC322964, rL322963 ) Step 2) Expand the IRBuilder API to allow creation of memcpy/memmove with differing source and dest alignments. ( rL323597 ) Step 3) Update Clang to use the new IRBuilder API. Step 4) Update Polly to use the new IRBuilder API. Step 5) Update LLVM passes that create memcpy/memmove calls to use the new IRBuilder API, and those that use use MemIntrinsicInst::[get|set]Alignment() to use getDestAlignment() and getSourceAlignment() instead. Step 6) Remove the single-alignment IRBuilder API for memcpy/memmove, and the MemIntrinsicInst::[get|set]Alignment() methods. Reference http://lists.llvm.org/pipermail/llvm-dev/2015-August/089384.html http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html Reviewers: rjmccall Subscribers: jyknight, nemanjai, nhaehnle, javed.absar, sbc100, aheejin, kbarton, fedor.sergeev, cfe-commits Differential Revision: https://reviews.llvm.org/D41677 llvm-svn: 323617
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/// RUN: %clang_cc1 -triple x86_64-apple-darwin12 -emit-llvm -o - -std=c++11 %s -DPOD | FileCheck %s -check-prefix=CHECK-POD
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// RUN: %clang_cc1 -triple x86_64-apple-darwin12 -emit-llvm -o - -std=c++11 %s | FileCheck %s -check-prefix=CHECK-NONPOD
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// Declare the reserved placement operators.
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typedef __typeof__(sizeof(0)) size_t;
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void *operator new(size_t, void*) throw();
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void operator delete(void*, void*) throw();
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void *operator new[](size_t, void*) throw();
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void operator delete[](void*, void*) throw();
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template<typename T> T &&move(T&);
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struct foo {
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#ifndef POD
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foo() {} // non-POD
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#endif
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void *a, *b;
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bool c;
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};
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// It is not legal to copy the tail padding in all cases, but if it is it can
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// yield better codegen.
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foo *test1(void *f, const foo &x) {
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return new (f) foo(x);
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// CHECK-POD: test1
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// CHECK-POD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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// CHECK-NONPOD: test1
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// CHECK-NONPOD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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}
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foo *test2(const foo &x) {
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return new foo(x);
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// CHECK-POD: test2
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// CHECK-POD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 16 {{.*}} align 8 {{.*}}i64 24
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// CHECK-NONPOD: test2
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// CHECK-NONPOD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 16 {{.*}} align 8 {{.*}}i64 24
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}
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foo test3(const foo &x) {
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foo f = x;
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return f;
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// CHECK-POD: test3
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// CHECK-POD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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// CHECK-NONPOD: test3
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// CHECK-NONPOD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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}
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foo *test4(foo &&x) {
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return new foo(x);
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// CHECK-POD: test4
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// CHECK-POD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 16 {{.*}} align 8 {{.*}}i64 24
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// CHECK-NONPOD: test4
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// CHECK-NONPOD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 16 {{.*}} align 8 {{.*}}i64 24
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}
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void test5(foo &f, const foo &x) {
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f = x;
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// CHECK-POD: test5
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// CHECK-POD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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// CHECK-NONPOD: test5
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// CHECK-NONPOD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 17
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}
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extern foo globtest;
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void test6(foo &&x) {
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globtest = move(x);
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// CHECK-POD: test6
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// CHECK-POD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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// CHECK-NONPOD: test6
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// CHECK-NONPOD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 17
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}
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void byval(foo f);
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void test7(const foo &x) {
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byval(x);
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// CHECK-POD: test7
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// CHECK-POD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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// CHECK-NONPOD: test7
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// CHECK-NONPOD: call void @llvm.memcpy.p0i8.p0i8.i64({{.*}} align 8 {{.*}} align 8 {{.*}}i64 24
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}
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