forked from OSchip/llvm-project
[AIX] Support init priority
Support reserved [0-100] and non-reserved[101-65535] Clang/GNU init priority values on AIX. This patch maps Clang/GNU values into priority values used in sinit/sterm functions. User can play with values and be able to get init to occur before or after XL init and vice versa. Differential Revision: https://reviews.llvm.org/D91272
This commit is contained in:
Xiangling Liao
parent
9e9d9aba14
commit
01b3e6e026
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@ -1996,6 +1996,48 @@ bool PPCAIXAsmPrinter::doFinalization(Module &M) {
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return PPCAsmPrinter::doFinalization(M);
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}
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static unsigned mapToSinitPriority(int P) {
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if (P < 0 || P > 65535)
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report_fatal_error("invalid init priority");
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if (P <= 20)
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return P;
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if (P < 81)
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return 20 + (P - 20) * 16;
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if (P <= 1124)
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return 1004 + (P - 81);
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if (P < 64512)
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return 2047 + (P - 1124) * 33878;
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return 2147482625 + (P - 64512);
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}
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static std::string convertToSinitPriority(int Priority) {
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// This helper function converts clang init priority to values used in sinit
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// and sterm functions.
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//
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// The conversion strategies are:
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// We map the reserved clang/gnu priority range [0, 100] into the sinit/sterm
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// reserved priority range [0, 1023] by
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// - directly mapping the first 21 and the last 20 elements of the ranges
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// - linear interpolating the intermediate values with a step size of 16.
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//
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// We map the non reserved clang/gnu priority range of [101, 65535] into the
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// sinit/sterm priority range [1024, 2147483648] by:
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// - directly mapping the first and the last 1024 elements of the ranges
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// - linear interpolating the intermediate values with a step size of 33878.
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unsigned int P = mapToSinitPriority(Priority);
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std::string PrioritySuffix;
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llvm::raw_string_ostream os(PrioritySuffix);
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os << llvm::format_hex_no_prefix(P, 8);
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os.flush();
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return PrioritySuffix;
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}
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void PPCAIXAsmPrinter::emitXXStructorList(const DataLayout &DL,
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const Constant *List, bool IsCtor) {
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SmallVector<Structor, 8> Structors;
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@ -2005,14 +2047,14 @@ void PPCAIXAsmPrinter::emitXXStructorList(const DataLayout &DL,
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unsigned Index = 0;
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for (Structor &S : Structors) {
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if (S.Priority != 65535)
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report_fatal_error(
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"prioritized sinit and sterm functions are not yet supported on AIX");
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if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(S.Func))
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S.Func = CE->getOperand(0);
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llvm::GlobalAlias::create(
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GlobalValue::ExternalLinkage,
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(IsCtor ? llvm::Twine("__sinit") : llvm::Twine("__sterm")) +
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llvm::Twine("80000000_", FormatIndicatorAndUniqueModId) +
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llvm::Twine(convertToSinitPriority(S.Priority)) +
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llvm::Twine("_", FormatIndicatorAndUniqueModId) +
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llvm::Twine("_", llvm::utostr(Index++)),
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cast<Function>(S.Func));
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}
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@ -1,10 +1,146 @@
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; RUN: not --crash llc -mtriple powerpc-ibm-aix-xcoff < %s 2>&1 | FileCheck %s
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; RUN: not --crash llc -mtriple powerpc64-ibm-aix-xcoff < %s 2>&1 | FileCheck %s
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; RUN: llc -mtriple powerpc-ibm-aix-xcoff -verify-machineinstrs < %s | FileCheck %s
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; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -verify-machineinstrs < %s | FileCheck %s
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 655, void ()* @foo, i8* null }]
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@llvm.global_ctors = appending global [5 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 0, void ()* bitcast (i32 (i32)* @cf1 to void ()*), i8* null }, { i32, void ()*, i8* } { i32 21, void ()* @cf2, i8* null }, { i32, void ()*, i8* } { i32 81, void ()* @cf3, i8* null }, { i32, void ()*, i8* } { i32 1125, void ()* @cf4, i8* null }, { i32, void ()*, i8* } { i32 64512, void ()* @cf5, i8* null }]
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@llvm.global_dtors = appending global [5 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 20, void ()* bitcast (i32 (i32)* @df1 to void ()*), i8* null }, { i32, void ()*, i8* } { i32 80, void ()* @df2, i8* null }, { i32, void ()*, i8* } { i32 1124, void ()* @df3, i8* null }, { i32, void ()*, i8* } { i32 64511, void ()* @df4, i8* null }, { i32, void ()*, i8* } { i32 65535, void ()* @df5, i8* null }]
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define void @foo() {
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define i32 @cf1(i32 %a) {
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ret i32 %a
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}
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define void @cf2() {
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ret void
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}
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; CHECK: LLVM ERROR: prioritized sinit and sterm functions are not yet supported
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define void @cf3() {
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ret void
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}
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define void @cf4() {
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ret void
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}
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define void @cf5() {
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ret void
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}
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define i32 @df1(i32 %a) {
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ret i32 %a
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}
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define void @df2() {
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ret void
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}
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define void @df3() {
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ret void
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}
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define void @df4() {
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ret void
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}
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define void @df5() {
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ret void
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}
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; CHECK: .globl cf1[DS]
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; CHECK: .globl .cf1
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; CHECK: .align 2
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; CHECK: .csect cf1[DS]
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; CHECK: __sinit00000000_clang_f6a1bc9396775a64c6249effda300afe_0: # @cf1
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; CHECK: .cf1:
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; CHECK: .__sinit00000000_clang_f6a1bc9396775a64c6249effda300afe_0:
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; CHECK: .globl cf2[DS]
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; CHECK: .globl .cf2
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; CHECK: .align 2
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; CHECK: .csect cf2[DS]
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; CHECK: __sinit00000024_clang_f6a1bc9396775a64c6249effda300afe_1: # @cf2
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; CHECK: .cf2:
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; CHECK: .__sinit00000024_clang_f6a1bc9396775a64c6249effda300afe_1:
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; CHECK: .globl cf3[DS]
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; CHECK: .globl .cf3
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; CHECK: .align 2
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; CHECK: .csect cf3[DS]
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; CHECK: __sinit000003ec_clang_f6a1bc9396775a64c6249effda300afe_2: # @cf3
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; CHECK: .cf3:
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; CHECK: .__sinit000003ec_clang_f6a1bc9396775a64c6249effda300afe_2:
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; CHECK: .globl cf4[DS]
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; CHECK: .globl .cf4
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; CHECK: .align 2
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; CHECK: .csect cf4[DS]
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; CHECK: __sinit00008c55_clang_f6a1bc9396775a64c6249effda300afe_3: # @cf4
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; CHECK: .cf4:
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; CHECK: .__sinit00008c55_clang_f6a1bc9396775a64c6249effda300afe_3:
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; CHECK: .globl cf5[DS]
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; CHECK: .globl .cf5
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; CHECK: .align 2
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; CHECK: .csect cf5[DS]
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; CHECK: __sinit7ffffc01_clang_f6a1bc9396775a64c6249effda300afe_4: # @cf5
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; CHECK: .cf5:
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; CHECK: .__sinit7ffffc01_clang_f6a1bc9396775a64c6249effda300afe_4:
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; CHECK: .globl df1[DS]
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; CHECK: .globl .df1
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; CHECK: .align 2
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; CHECK: .csect df1[DS]
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; CHECK: __sterm00000014_clang_f6a1bc9396775a64c6249effda300afe_0: # @df1
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; CHECK: .df1:
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; CHECK: .__sterm00000014_clang_f6a1bc9396775a64c6249effda300afe_0:
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; CHECK: .globl df2[DS]
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; CHECK: .globl .df2
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; CHECK: .align 2
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; CHECK: .csect df2[DS]
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; CHECK: __sterm000003d4_clang_f6a1bc9396775a64c6249effda300afe_1: # @df2
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; CHECK: .df2:
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; CHECK: .__sterm000003d4_clang_f6a1bc9396775a64c6249effda300afe_1:
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; CHECK: .globl df3[DS]
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; CHECK: .globl .df3
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; CHECK: .align 2
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; CHECK: .csect df3[DS]
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; CHECK: __sterm000007ff_clang_f6a1bc9396775a64c6249effda300afe_2: # @df3
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; CHECK: .df3:
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; CHECK: .__sterm000007ff_clang_f6a1bc9396775a64c6249effda300afe_2:
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; CHECK: .globl df4[DS]
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; CHECK: .globl .df4
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; CHECK: .align 2
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; CHECK: .csect df4[DS]
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; CHECK: __sterm7fff2211_clang_f6a1bc9396775a64c6249effda300afe_3: # @df4
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; CHECK: .df4:
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; CHECK: .__sterm7fff2211_clang_f6a1bc9396775a64c6249effda300afe_3:
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; CHECK: .globl df5[DS]
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; CHECK: .globl .df5
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; CHECK: .align 2
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; CHECK: .csect df5[DS]
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; CHECK: __sterm80000000_clang_f6a1bc9396775a64c6249effda300afe_4: # @df5
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; CHECK: .df5:
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; CHECK: .__sterm80000000_clang_f6a1bc9396775a64c6249effda300afe_4:
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; CHECK: .globl __sinit00000000_clang_f6a1bc9396775a64c6249effda300afe_0
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; CHECK: .globl .__sinit00000000_clang_f6a1bc9396775a64c6249effda300afe_0
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; CHECK: .globl __sinit00000024_clang_f6a1bc9396775a64c6249effda300afe_1
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; CHECK: .globl .__sinit00000024_clang_f6a1bc9396775a64c6249effda300afe_1
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; CHECK: .globl __sinit000003ec_clang_f6a1bc9396775a64c6249effda300afe_2
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; CHECK: .globl .__sinit000003ec_clang_f6a1bc9396775a64c6249effda300afe_2
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; CHECK: .globl __sinit00008c55_clang_f6a1bc9396775a64c6249effda300afe_3
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; CHECK: .globl .__sinit00008c55_clang_f6a1bc9396775a64c6249effda300afe_3
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; CHECK: .globl __sinit7ffffc01_clang_f6a1bc9396775a64c6249effda300afe_4
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; CHECK: .globl .__sinit7ffffc01_clang_f6a1bc9396775a64c6249effda300afe_4
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; CHECK: .globl __sterm00000014_clang_f6a1bc9396775a64c6249effda300afe_0
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; CHECK: .globl .__sterm00000014_clang_f6a1bc9396775a64c6249effda300afe_0
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; CHECK: .globl __sterm000003d4_clang_f6a1bc9396775a64c6249effda300afe_1
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; CHECK: .globl .__sterm000003d4_clang_f6a1bc9396775a64c6249effda300afe_1
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; CHECK: .globl __sterm000007ff_clang_f6a1bc9396775a64c6249effda300afe_2
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; CHECK: .globl .__sterm000007ff_clang_f6a1bc9396775a64c6249effda300afe_2
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; CHECK: .globl __sterm7fff2211_clang_f6a1bc9396775a64c6249effda300afe_3
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; CHECK: .globl .__sterm7fff2211_clang_f6a1bc9396775a64c6249effda300afe_3
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; CHECK: .globl __sterm80000000_clang_f6a1bc9396775a64c6249effda300afe_4
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; CHECK: .globl .__sterm80000000_clang_f6a1bc9396775a64c6249effda300afe_4
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