79 lines
3.0 KiB
Diff
79 lines
3.0 KiB
Diff
--- b/include/clang/Basic/TargetInfo.h
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+++ a/include/clang/Basic/TargetInfo.h
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@@ -612,8 +612,8 @@
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}
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/// Return the largest alignment for which a suitably-sized allocation with
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+ /// '::operator new(size_t)' is guaranteed to produce a correctly-aligned
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+ /// pointer.
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- /// '::operator new(size_t)' or 'malloc' is guaranteed to produce a
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- /// correctly-aligned pointer.
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unsigned getNewAlign() const {
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return NewAlign ? NewAlign : std::max(LongDoubleAlign, LongLongAlign);
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}
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--- b/lib/CodeGen/CGCall.cpp
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+++ a/lib/CodeGen/CGCall.cpp
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@@ -2048,24 +2048,6 @@
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// allows it to work on indirect virtual function calls.
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if (AttrOnCallSite && TargetDecl->hasAttr<NoMergeAttr>())
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FuncAttrs.addAttribute(llvm::Attribute::NoMerge);
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-
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- // Add known guaranteed alignment for allocation functions.
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- if (unsigned BuiltinID = Fn->getBuiltinID()) {
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- switch (BuiltinID) {
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- case Builtin::BIaligned_alloc:
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- case Builtin::BIcalloc:
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- case Builtin::BImalloc:
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- case Builtin::BImemalign:
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- case Builtin::BIrealloc:
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- case Builtin::BIstrdup:
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- case Builtin::BIstrndup:
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- RetAttrs.addAlignmentAttr(Context.getTargetInfo().getNewAlign() /
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- Context.getTargetInfo().getCharWidth());
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- break;
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- default:
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- break;
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- }
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- }
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}
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// 'const', 'pure' and 'noalias' attributed functions are also nounwind.
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--- b/test/CodeGen/alloc-fns-alignment.c
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+++ /dev/null
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@@ -1,35 +0,0 @@
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-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm < %s | FileCheck %s --check-prefix=ALIGN16
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-// RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm < %s | FileCheck %s --check-prefix=ALIGN16
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-// RUN: %clang_cc1 -triple i386-apple-darwin -emit-llvm < %s | FileCheck %s --check-prefix=ALIGN16
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-// RUN: %clang_cc1 -triple i386-unknown-linux-gnu -emit-llvm < %s | FileCheck %s --check-prefix=ALIGN8
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-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fno-builtin-malloc -emit-llvm < %s | FileCheck %s --check-prefix=NOBUILTIN-MALLOC
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-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fno-builtin-calloc -emit-llvm < %s | FileCheck %s --check-prefix=NOBUILTIN-CALLOC
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-// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fno-builtin-realloc -emit-llvm < %s | FileCheck %s --check-prefix=NOBUILTIN-REALLOC
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-
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-typedef __SIZE_TYPE__ size_t;
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-
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-void *malloc(size_t);
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-void *calloc(size_t, size_t);
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-void *realloc(void *, size_t);
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-
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-void *malloc_test(size_t n) {
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- return malloc(n);
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-}
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-
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-void *calloc_test(size_t n) {
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- return calloc(1, n);
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-}
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-
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-void *raalloc_test(void *p, size_t n) {
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- return realloc(p, n);
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-}
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-
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-// ALIGN16: align 16 i8* @malloc
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-// ALIGN16: align 16 i8* @calloc
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-// ALIGN16: align 16 i8* @realloc
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-// ALIGN8: align 8 i8* @malloc
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-// ALIGN8: align 8 i8* @calloc
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-// ALIGN8: align 8 i8* @realloc
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-// NOBUILTIN-MALLOC: declare i8* @malloc
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-// NOBUILTIN-CALLOC: declare i8* @calloc
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-// NOBUILTIN-REALLOC: declare i8* @realloc
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