mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 03:53:04 +02:00
72115d5fb6
Summary:
Currently llvm::SplitModule as the first step globalizes all local objects, which might not be desirable in some scenarios.
This change adds a new flag to llvm::SplitModule that uses SCC approach to search for a balanced partition without the need to externalize symbols.
Such partition might not be possible or fully balanced for a given number of partitions, and is a function of the module properties (global/local dependencies within the module).
Joint development Tobias Edler von Koch (tobias@codeaurora.org) and Sergei Larin (slarin@codeaurora.org)
Subscribers: llvm-commits, joker.eph
Differential Revision: http://reviews.llvm.org/D16124
llvm-svn: 258083
66 lines
1.8 KiB
LLVM
66 lines
1.8 KiB
LLVM
; RUN: llvm-split -preserve-locals -o %t %s
|
|
; RUN: llvm-dis -o - %t0 | FileCheck --check-prefix=CHECK0 %s
|
|
; RUN: llvm-dis -o - %t1 | FileCheck --check-prefix=CHECK1 %s
|
|
|
|
; The local_var and local_func must not be separated.
|
|
; CHECK0: @local_var
|
|
; CHECK0: define internal fastcc void @local_func
|
|
; The main and a must not be separated.
|
|
; The main and local_func must not be together.
|
|
; CHECK1: @a
|
|
; CHECK1: define i32 @main
|
|
; CHECK1: declare fastcc void @local_func
|
|
|
|
@a = internal global i32 0, align 4
|
|
@global_storage = common global i32 0, align 4
|
|
@local_var = internal global i32 0, align 4
|
|
|
|
; Function Attrs: nounwind
|
|
define i32 @main(i32 %x) {
|
|
entry:
|
|
%call = call fastcc i32 @foo(i32 %x, i32* nonnull @a)
|
|
%call1 = call fastcc i32 @baz(i32 %x)
|
|
%add = add nsw i32 %call, %call1
|
|
ret i32 %add
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define fastcc i32 @bar(i32 %b) {
|
|
entry:
|
|
%call = call fastcc i32 @baz(i32 %b)
|
|
ret i32 %call
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define fastcc i32 @baz(i32 %x) {
|
|
entry:
|
|
store i32 %x, i32* @global_storage, align 4
|
|
%shl = shl i32 %x, %x
|
|
ret i32 %shl
|
|
}
|
|
|
|
; Function Attrs: noinline nounwind
|
|
define fastcc i32 @foo(i32 %a, i32* nocapture %b) {
|
|
entry:
|
|
call fastcc void @local_func()
|
|
%call = call fastcc i32 @bar(i32 %a)
|
|
%0 = load i32, i32* @global_storage, align 4
|
|
%call1 = call fastcc i32 @baz(i32 %0)
|
|
%add = add nsw i32 %call, %call1
|
|
store i32 %add, i32* %b, align 4
|
|
%call.i = call fastcc i32 @baz(i32 %add) #2
|
|
%add.i = add nsw i32 %call.i, 2
|
|
%1 = load volatile i32, i32* @local_var, align 4
|
|
%add3 = add nsw i32 %add.i, %1
|
|
ret i32 %add3
|
|
}
|
|
|
|
; Function Attrs: noinline nounwind
|
|
define internal fastcc void @local_func() section ".text" {
|
|
entry:
|
|
%0 = load i32, i32* @global_storage, align 4
|
|
%call = call fastcc i32 @foo(i32 %0, i32* null)
|
|
store volatile i32 %call, i32* @local_var, align 4
|
|
ret void
|
|
}
|