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7d64810efd
The benchmarking summarized in http://lists.llvm.org/pipermail/llvm-dev/2017-May/113525.html showed this is beneficial for a wide range of cores. As is to be expected, quite a few small adaptations are needed to the regressions tests, as the difference in scheduling results in: - Quite a few small instruction schedule differences. - A few changes in register allocation decisions caused by different instruction schedules. - A few changes in IfConversion decisions, due to a difference in instruction schedule and/or the estimated cost of a branch mispredict. llvm-svn: 306514
41 lines
945 B
LLVM
41 lines
945 B
LLVM
; RUN: llc -mtriple=armv7-apple-ios8.0 -o - %s | FileCheck %s
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%BigInt = type i5500
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define %BigInt @test_moved_jumptable(i1 %tst, i32 %sw, %BigInt %l) {
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; CHECK-LABEL: test_moved_jumptable:
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; CHECK: adr {{r[0-9]+}}, [[JUMP_TABLE:LJTI[0-9]+_[0-9]+]]
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; CHECK: b [[SKIP_TABLE:LBB[0-9]+_[0-9]+]]
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; CHECK: [[JUMP_TABLE]]:
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; CHECK: .data_region jt32
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; CHECK: .long LBB{{[0-9]+_[0-9]+}}-[[JUMP_TABLE]]
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; CHECK: [[SKIP_TABLE]]:
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; CHECK: add pc, {{r[0-9]+|lr}}, {{r[0-9]+|lr}}
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br i1 %tst, label %simple, label %complex
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simple:
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br label %end
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complex:
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switch i32 %sw, label %simple [ i32 0, label %other
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i32 1, label %third
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i32 5, label %end
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i32 6, label %other ]
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third:
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ret %BigInt 0
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other:
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call void @bar()
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unreachable
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end:
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%val = phi %BigInt [ %l, %complex ], [ -1, %simple ]
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ret %BigInt %val
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}
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declare void @bar()
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