derek.holloway
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61 lines
1.9 KiB
ArmAsm
61 lines
1.9 KiB
ArmAsm
## Test parsing of R (Return), r (FT_EXTERNAL_RETURN), and -1 hex (BR_ONLY)
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## records in pre-aggregated profiles, plus error paths for invalid record
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## types and malformed hex addresses. Closes e2e gaps that were previously
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## only exercised by unit tests.
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# REQUIRES: system-linux
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# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
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# RUN: ld.lld %t.o -o %t
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# RUN: link_fdata %s %t %t.preagg PREAGG
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## Parse R, r, B-with-neg1, T-with-neg1, plus a regular F as a sanity check.
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# RUN: perf2bolt %t -p %t.preagg --pa -o %t.fdata 2>&1 \
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# RUN: | FileCheck %s --check-prefix=CHECK-PARSE
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# CHECK-PARSE: read 6 aggregated brstack entries
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## Error path: invalid record type letter.
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# RUN: not perf2bolt %t -o %t.bad.fdata --pa \
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# RUN: -p %p/Inputs/pre-aggregated-bad-type.txt 2>&1 \
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# RUN: | FileCheck %s --check-prefix=CHECK-BAD-TYPE
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# CHECK-BAD-TYPE: expected T, R, S, E, B, F, f or r
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## Error path: malformed hex address.
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# RUN: not perf2bolt %t -o %t.bad.fdata --pa \
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# RUN: -p %p/Inputs/pre-aggregated-bad-hex.txt 2>&1 \
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# RUN: | FileCheck %s --check-prefix=CHECK-BAD-HEX
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# CHECK-BAD-HEX: expected hexadecimal number
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.text
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.globl main
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.type main, @function
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main:
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pushq %rbp
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movq %rsp, %rbp
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cmpl $0, %edi
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Lbr:
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je Lfalse
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Ltrue:
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movl $1, %eax
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jmp Lret
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Lfalse:
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xorl %eax, %eax
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Lret:
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popq %rbp
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Lretins:
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retq
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.size main, .-main
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## R: Return - branch in main returning to caller's continuation.
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# PREAGG: R #Lretins# #Lretins# #Lbr# 5
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## R with branch=0: falls back to FT_EXTERNAL_RETURN sentinel.
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# PREAGG: R 0 #Lretins# #Lbr# 2
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## r: fall-through after an external return.
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# PREAGG: r #Lbr# #Ltrue# 7
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## B with -1 (HEAD commit feature): parsed as BR_ONLY (overwritten anyway).
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# PREAGG: B #Lbr# -1 1 0
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## T with -1 as fall-through end: BR_ONLY sentinel preserved.
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# PREAGG: T #Lbr# #Ltrue# -1 4
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## F: regular fall-through sanity check.
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# PREAGG: F #Ltrue# #Lret# 3
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