[Support] make report_fatal_error `abort` instead of `exit`
Summary:
This patch could be treated as a rebase of D33960. It also fixes PR35547.
A fix for `llvm/test/Other/close-stderr.ll` is proposed in D68164. Seems
the consensus is that the test is passing by chance and I'm not
sure how important it is for us. So it is removed like in D33960 for now.
The rest of the test fixes are just adding `--crash` flag to `not` tool.
** The reason it fixes PR35547 is
`exit` does cleanup including calling class destructor whereas `abort`
does not do any cleanup. In multithreading environment such as ThinLTO or JIT,
threads may share states which mostly are ManagedStatic<>. If faulting thread
tearing down a class when another thread is using it, there are chances of
memory corruption. This is bad 1. It will stop error reporting like pretty
stack printer; 2. The memory corruption is distracting and nondeterministic in
terms of error message, and corruption type (depending one the timing, it
could be double free, heap free after use, etc.).
Reviewers: rnk, chandlerc, zturner, sepavloff, MaskRay, espindola
Reviewed By: rnk, MaskRay
Subscribers: wuzish, jholewinski, qcolombet, dschuff, jyknight, emaste, sdardis, nemanjai, jvesely, nhaehnle, sbc100, arichardson, jgravelle-google, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, jrtc27, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, jsji, lenary, s.egerton, pzheng, cfe-commits, MaskRay, filcab, davide, MatzeB, mehdi_amini, hiraditya, steven_wu, dexonsmith, rupprecht, seiya, llvm-commits
Tags: #llvm, #clang
Differential Revision: https://reviews.llvm.org/D67847
2020-01-15 14:43:51 +08:00
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#RUN: not --crash llc -o - -march=arm64 -global-isel -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s
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2019-01-19 04:49:17 +08:00
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# REQUIRES: global-isel, aarch64-registered-target
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---
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name: test_fcmp
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legalized: true
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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liveins:
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body: |
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bb.0:
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%0:_(s32) = G_FCONSTANT float 0.0
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%1:_(s32) = G_FCONSTANT float 1.0
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; Vector result, scalar source
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; CHECK: Bad machine code: Generic vector icmp/fcmp must preserve number of lanes
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%2:_(<2 x s1>) = G_FCMP floatpred(oeq), %0, %1
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; Scalar result, vector source
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; CHECK: Bad machine code: Generic vector icmp/fcmp must preserve number of lanes
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%3:_(<2 x s32>) = G_IMPLICIT_DEF
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%4:_(<2 x s32>) = G_IMPLICIT_DEF
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%5:_(s1) = G_FCMP floatpred(oeq), %3, %4
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; mismatched element count
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; CHECK: Bad machine code: Generic vector icmp/fcmp must preserve number of
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%6:_(<2 x s32>) = G_IMPLICIT_DEF
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%7:_(<2 x s32>) = G_IMPLICIT_DEF
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%8:_(<4 x s1>) = G_FCMP floatpred(oeq), %6, %7
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; mismatched scalar element type
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; CHECK: *** Bad machine code: Type mismatch in generic instruction ***
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%9:_(s32) = G_FCONSTANT float 0.0
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%10:_(s64) = G_FCONSTANT float 1.0
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%11:_(s1) = G_FCMP floatpred(oeq), %9, %10
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...
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