derek.holloway
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85 lines
2.7 KiB
YAML
85 lines
2.7 KiB
YAML
# RUN: llc -mcpu=future -mtriple=powerpc64le-unknown-unknown %s \
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# RUN: -start-before=ppc-branch-select -verify-machineinstrs \
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# RUN: -filetype=obj -o - | llvm-objdump --mcpu=future -d -r - | \
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# RUN: FileCheck --check-prefix=CHECK-LE %s
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# RUN: llc -mcpu=future -mtriple=powerpc64-unknown-unknown %s \
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# RUN: -start-before=ppc-branch-select -verify-machineinstrs \
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# RUN: -filetype=obj -o - | llvm-objdump --mcpu=future -d -r - | \
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# RUN: FileCheck --check-prefix=CHECK-BE %s
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# The purpose of this test is to check that long branches are selected correctly
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# when we have prefixed instructions that may require alignment. Prefixed
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# instructions may require alignment and so an additional 4 bytes may be added.
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# If those 4 bytes put the target of the branch past the range of a short branch
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# then we should use a long branch like in this test.
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---
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name: longbranchtest
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alignment: 16
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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registers: []
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liveins:
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- { reg: '$x3', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 1
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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localFrameSize: 0
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savePoint: []
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restorePoint: []
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fixedStack: []
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stack: []
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callSites: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0.entry:
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successors: %bb.1(0x30000000), %bb.2(0x50000000)
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liveins: $x3
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renamable $cr0 = CMPLWI killed renamable $r3, 0, implicit $x3
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BCC 76, killed renamable $cr0, %bb.1
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bb.2:
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renamable $x3 = LI8 2
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INLINEASM &".space 32744", sideeffect attdialect
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renamable $x3 = PADDI8 $x3, 13
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BLR8 implicit $lr8, implicit $rm, implicit killed $x3
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bb.1:
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renamable $x3 = LI8 1
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INLINEASM &".space 32744", sideeffect attdialect
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renamable $x3 = PADDI8 $x3, 21
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BLR8 implicit $lr8, implicit $rm, implicit killed $x3
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...
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# Check for the long branch.
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# CHECK-LE: 08 00 82 4{{[01]}} b{{[tf]}} 2, 0xc
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# CHECK-LE-NEXT: fc 7f 00 48 b 0x8004
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# CHECK-LE-DAG: paddi 3, 3, 13, 0
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# CHECK-LE-DAG: paddi 3, 3, 21, 0
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# CHECK-LE: blr
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# CHECK-BE: 4{{[01]}} 82 00 08 b{{[tf]}} 2, 0xc
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# CHECK-BE-NEXT: 48 00 7f fc b 0x8004
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# CHECK-BE-DAG: paddi 3, 3, 13, 0
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# CHECK-BE-DAG: paddi 3, 3, 21, 0
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# CHECK-BE: blr
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