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[LazyMachineBFI] Add testcase

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This is based on Justin's testcase and checking whether BFI is not populated
in case hotness is off.

This is a patch meant on top of Justin's patch to enable Machine opt-remarks
in the
AsmPrinter (http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20170130/426595.html)

Differential Revision: https://reviews.llvm.org/D29837

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296065 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adam Nemet 2017-02-24 01:22:55 +00:00
parent 969577f54d
commit c1a4dd37ad
1 changed files with 63 additions and 0 deletions
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63
test/CodeGen/AArch64/arm64-opt-remarks-lazy-bfi.ll Normal file
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; RUN: llc < %s -mtriple=arm64-apple-ios7.0 -pass-remarks-analysis=asm-printer \
; RUN: -pass-remarks-with-hotness=1 -asm-verbose=0 \
; RUN: -debug-only=lazy-machine-block-freq,block-freq \
; RUN: -debug-pass=Executions 2>&1 | FileCheck %s -check-prefix=HOTNESS
; RUN: llc < %s -mtriple=arm64-apple-ios7.0 -pass-remarks-analysis=asm-printer \
; RUN: -pass-remarks-with-hotness=0 -asm-verbose=0 \
; RUN: -debug-only=lazy-machine-block-freq,block-freq \
; RUN: -debug-pass=Executions 2>&1 | FileCheck %s -check-prefix=NO_HOTNESS
; REQUIRES: asserts
; Verify that we don't new populate MachineBFI for passes that already use
; MBFI, e.g. GreedyRegAlloc. (This hard-codes the previous pass to the
; GreedyRegAlloc, please adjust accordingly.)
; HOTNESS: Executing Pass 'Spill Code Placement Analysis'
; HOTNESS-NEXT: Executing Pass 'Lazy Machine Block Frequency Analysis'
; HOTNESS-NEXT: Executing Pass 'Machine Optimization Remark Emitter'
; HOTNESS-NEXT: MachineBlockFrequencyInfo is available
; HOTNESS-NEXT: Executing Pass 'Greedy Register Allocator'
; Verify that we only populate MachineBFI on behalf of ORE when hotness is
; requested. (This hard-codes the previous pass to the Assembly Printer,
; please adjust accordingly.)
; HOTNESS: Executing Pass 'Implement the 'patchable-function' attribute'
; HOTNESS-NEXT: Freeing Pass 'Implement the 'patchable-function' attribute'
; HOTNESS-NEXT: Executing Pass 'Lazy Machine Block Frequency Analysis'
; HOTNESS-NEXT: Executing Pass 'Machine Optimization Remark Emitter'
; HOTNESS-NEXT: Building MachineBlockFrequencyInfo on the fly
; HOTNESS-NEXT: Building LoopInfo on the fly
; HOTNESS-NEXT: Building DominatorTree on the fly
; HOTNESS-NOT: Executing Pass
; HOTNESS: block-frequency: empty_func
; HOTNESS-NOT: Executing Pass
; HOTNESS: Executing Pass 'AArch64 Assembly Printer'
; HOTNESS: arm64-summary-remarks.ll:5:0: 1 instructions in function (hotness: 33)
; NO_HOTNESS: Executing Pass 'Implement the 'patchable-function' attribute'
; NO_HOTNESS-NEXT: Freeing Pass 'Implement the 'patchable-function' attribute'
; NO_HOTNESS-NEXT: Executing Pass 'Lazy Machine Block Frequency Analysis'
; NO_HOTNESS-NEXT: Executing Pass 'Machine Optimization Remark Emitter'
; NO_HOTNESS-NEXT: Executing Pass 'AArch64 Assembly Printer'
; NO_HOTNESS: arm64-summary-remarks.ll:5:0: 1 instructions in function{{$}}
define void @empty_func() nounwind ssp !dbg !3 !prof !4 {
ret void
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2}
!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1)
!1 = !DIFile(filename: "arm64-summary-remarks.ll", directory: "")
!2 = !{i32 2, !"Debug Info Version", i32 3}
!3 = distinct !DISubprogram(name: "empty_func", scope: !1, file: !1, line: 5, scopeLine: 5, unit: !0)
!4 = !{!"function_entry_count", i64 33}