mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-20 03:23:01 +02:00
42 lines
1.6 KiB
LLVM
42 lines
1.6 KiB
LLVM
; Checks that we optimize writeonly variables and corresponding stores using llvm-lto
|
|
; -stats requires asserts
|
|
; REQUIRES: asserts
|
|
|
|
; RUN: opt -module-summary %s -o %t1.bc
|
|
; RUN: opt -module-summary %p/Inputs/index-const-prop.ll -o %t2.bc
|
|
; RUN: llvm-lto -thinlto-action=thinlink -o %t3.index.bc %t1.bc %t2.bc
|
|
|
|
; Check that we optimize write-only variables
|
|
; RUN: llvm-lto -thinlto-action=import -exported-symbol=main %t1.bc -thinlto-index=%t3.index.bc -o %t1.imported.bc -stats 2>&1 | FileCheck %s --check-prefix=STATS
|
|
; RUN: llvm-dis %t1.imported.bc -o - | FileCheck %s --check-prefix=IMPORT
|
|
; RUN: llvm-lto -thinlto-action=optimize %t1.imported.bc -o - | llvm-dis - -o - | FileCheck %s --check-prefix=OPTIMIZE
|
|
|
|
; IMPORT: @gFoo.llvm.0 = internal unnamed_addr global i32 1, align 4, !dbg !0
|
|
; IMPORT-NEXT: @gBar = internal local_unnamed_addr global i32 2, align 4, !dbg !5
|
|
; IMPORT: !DICompileUnit({{.*}})
|
|
|
|
; STATS: 2 module-summary-index - Number of live global variables marked write only
|
|
|
|
; Check that we've optimized out variables and corresponding stores
|
|
; OPTIMIZE-NOT: gFoo
|
|
; OPTIMIZE-NOT: gBar
|
|
; OPTIMIZE: i32 @main
|
|
; OPTIMIZE-NEXT: %1 = tail call i32 @rand()
|
|
; OPTIMIZE-NEXT: %2 = tail call i32 @rand()
|
|
; OPTIMIZE-NEXT: ret i32 0
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-pc-linux-gnu"
|
|
|
|
@gBar = external global i32
|
|
|
|
; Should not be counted in the stats of live write only variables since it is
|
|
; dead and will be dropped anyway.
|
|
@gDead = internal unnamed_addr global i32 1, align 4
|
|
|
|
define i32 @main() local_unnamed_addr {
|
|
tail call void @baz()
|
|
ret i32 0
|
|
}
|
|
declare void @baz() local_unnamed_addr
|