bf6124580d
Add options -[no-]offload-lto and -foffload-lto=[thin,full] for controlling LTO for offload compilation. Allow LTO for AMDGPU target. AMDGPU target does not support codegen of object files containing call of external functions, therefore the LLVM module passed to AMDGPU backend needs to contain definitions of all the callees. An LLVM option is added to allow function importer to import functions with noinline attribute. HIP toolchain passes proper LLVM options to lld to make sure function importer imports definitions of all the callees. Reviewed by: Teresa Johnson, Artem Belevich Differential Revision: https://reviews.llvm.org/D99683
169 lines
4.0 KiB
LLVM
169 lines
4.0 KiB
LLVM
target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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@globalvar = global i32 1, align 4
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@staticvar = internal global i32 1, align 4
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@staticconstvar = internal unnamed_addr constant [2 x i32] [i32 10, i32 20], align 4
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@commonvar = common global i32 0, align 4
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@P = internal global void ()* null, align 8
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@weakalias = weak alias void (...), bitcast (void ()* @globalfunc1 to void (...)*)
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@analias = alias void (...), bitcast (void ()* @globalfunc2 to void (...)*)
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@linkoncealias = alias void (...), bitcast (void ()* @linkoncefunc to void (...)*)
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define void @globalfunc1() #0 {
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entry:
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call void @funcwithpersonality()
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call void (...) @variadic_va_start()
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ret void
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}
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define void @globalfunc2() #0 {
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entry:
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ret void
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}
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define linkonce_odr void @linkoncefunc() #0 {
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entry:
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ret void
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}
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define i32 @referencestatics(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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%call = call i32 @staticfunc()
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%0 = load i32, i32* @staticvar, align 4
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%add = add nsw i32 %call, %0
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%1 = load i32, i32* %i.addr, align 4
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%idxprom = sext i32 %1 to i64
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%arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* @staticconstvar, i64 0, i64 %idxprom
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%2 = load i32, i32* %arrayidx, align 4
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%add1 = add nsw i32 %add, %2
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ret i32 %add1
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}
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define i32 @referenceglobals(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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call void @globalfunc1()
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%0 = load i32, i32* @globalvar, align 4
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ret i32 %0
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}
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define i32 @referencecommon(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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%0 = load i32, i32* @commonvar, align 4
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ret i32 %0
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}
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define void @setfuncptr() #0 {
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entry:
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store void ()* @staticfunc2, void ()** @P, align 8
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ret void
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}
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define void @callfuncptr() #0 {
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entry:
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%0 = load void ()*, void ()** @P, align 8
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call void %0()
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ret void
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}
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@weakvar = weak global i32 1, align 4
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define weak void @weakfunc() #0 {
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entry:
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ret void
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}
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define linkonce void @linkoncefunc2() #0 {
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entry:
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ret void
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}
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define internal i32 @staticfunc() #0 {
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entry:
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ret i32 1
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}
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declare i32 @__gxx_personality_v0(...)
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; Add enough instructions to prevent import with inst limit of 5
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define internal void @funcwithpersonality() #2 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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ret void
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}
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define internal void @staticfunc2() #0 {
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entry:
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ret void
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}
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define void @referencelargelinkonce() #0 {
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entry:
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call void @linkonceodr()
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ret void
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}
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; A large enough linkonce_odr function that should never be imported
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define linkonce_odr void @linkonceodr() #0 {
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entry:
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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call void @globalfunc2()
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ret void
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}
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; Variadic function without va_start can be imported because inliner
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; can handle it.
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define void @variadic_no_va_start(...) {
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ret void
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}
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; Variadic function with va_start should not be imported because inliner
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; doesn't handle it.
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define void @variadic_va_start(...) {
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%ap = alloca i8*, align 8
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%ap.0 = bitcast i8** %ap to i8*
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call void @llvm.va_start(i8* %ap.0)
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ret void
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}
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declare void @llvm.va_start(i8*) nounwind
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