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69 lines
2.5 KiB
LLVM
69 lines
2.5 KiB
LLVM
;; Test that passing -supports-hot-cold-new to the LTO link allows context
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;; disambiguation to proceed, and also prevents memprof metadata and attributes
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;; from being removed from the LTO backend, and vice versa without passing
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;; -supports-hot-cold-new.
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;; Note that this tests regular LTO (with a summary) due to the module flag
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;; disabling ThinLTO.
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;; First check with -supports-hot-cold-new.
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; RUN: opt -module-summary %s >%t.o
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; RUN: llvm-lto2 run %t.o -enable-memprof-context-disambiguation \
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; RUN: -supports-hot-cold-new \
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; RUN: -r=%t.o,main,plx \
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; RUN: -r=%t.o,_Znam, \
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; RUN: -memprof-dump-ccg \
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; RUN: -print-before=memprof-context-disambiguation \
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; RUN: -o %t.out 2>&1 | FileCheck %s --check-prefix=DUMP --check-prefix=IR
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; IR: !memprof {{.*}} !callsite
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; IR: "memprof"="cold"
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; DUMP: Callsite Context Graph:
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;; Next check without -supports-hot-cold-new, we should not perform
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;; context disambiguation, and we should strip memprof metadata and
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;; attributes before optimization.
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; RUN: llvm-lto2 run %t.o -enable-memprof-context-disambiguation \
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; RUN: -r=%t.o,main,plx \
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; RUN: -r=%t.o,_Znam, \
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; RUN: -memprof-dump-ccg \
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; RUN: -print-before=memprof-context-disambiguation \
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; RUN: -o %t.out 2>&1 | FileCheck %s --allow-empty \
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; RUN: --implicit-check-not "Callsite Context Graph:" \
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; RUN: --implicit-check-not "!memprof" --implicit-check-not "!callsite" \
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; RUN: --implicit-check-not "memprof"="cold"
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;; Ensure the attributes and metadata are stripped when running a non-LTO pipeline.
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; RUN: opt -O3 %t.o -S | FileCheck %s \
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; RUN: --implicit-check-not "!memprof" --implicit-check-not "!callsite" \
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; RUN: --implicit-check-not "memprof"="cold"
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source_filename = "memprof-supports-hot-cold-new.ll"
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target datalayout = "e-m:e-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-unknown-linux-gnu"
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define i32 @main() #0 {
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entry:
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%call = call ptr @_Znam(i64 0), !memprof !0, !callsite !5
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%call2 = call ptr @_Znam(i64 0) #1
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ret i32 0
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}
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declare ptr @_Znam(i64)
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attributes #0 = { noinline optnone }
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attributes #1 = { "memprof"="cold" }
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!llvm.module.flags = !{!6}
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!0 = !{!1, !3}
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!1 = !{!2, !"notcold"}
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!2 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 8632435727821051414}
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!3 = !{!4, !"cold"}
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!4 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 -3421689549917153178}
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!5 = !{i64 9086428284934609951}
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;; Force regular LTO even though we have a summary.
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!6 = !{i32 1, !"ThinLTO", i32 0}
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