forked from OSchip/llvm-project
112 lines
3.1 KiB
Plaintext
112 lines
3.1 KiB
Plaintext
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# RUN: llc -mtriple=aarch64-linux-gnu %s -run-pass=aarch64-jump-tables -o - | FileCheck %s
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--- |
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define i32 @test_jumptable(i32 %in) {
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unreachable
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}
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...
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---
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name: test_jumptable
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alignment: 2
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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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tracksRegLiveness: true
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liveins:
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- { reg: '$w0' }
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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: 0
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adjustsStack: false
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hasCalls: false
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maxCallFrameSize: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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jumpTable:
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kind: block-address
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entries:
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- id: 0
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blocks: [ '%bb.2', '%bb.3' ]
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- id: 1
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blocks: [ '%bb.4', '%bb.5' ]
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- id: 2
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blocks: [ '%bb.7' ]
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- id: 3
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blocks: [ '%bb.9' ]
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- id: 4
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blocks: [ '%bb.9' ]
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- id: 5
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blocks: [ '%bb.11' ]
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body: |
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bb.0 (%ir-block.0):
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bb.1 (%ir-block.0):
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; CHECK-LABEL: body:
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; CHECK-LABEL: bb.1
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; CHECK: JumpTableDest8
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liveins: $x8
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early-clobber $x10, dead early-clobber $x11 = JumpTableDest32 undef killed $x9, undef killed $x8, %jump-table.0
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BR killed $x10
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bb.2:
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; Last destination is 4 * 255 = 1020 bytes after first. Byte is OK.
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dead $xzr = SPACE 1020, undef $xzr
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bb.3:
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; CHECK-LABEL: bb.3
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; CHECK: JumpTableDest16
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early-clobber $x10, dead early-clobber $x11 = JumpTableDest32 undef killed $x9, undef killed $x8, %jump-table.1
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BR killed $x10
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bb.4:
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; Last destination is 4 * 256 = 1024 bytes after first. Half needed.
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dead $xzr = SPACE 1024, undef $xzr
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bb.5:
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; CHECK-LABEL: bb.5
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; CHECK: JumpTableDest8
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early-clobber $x10, dead early-clobber $x11 = JumpTableDest32 undef killed $x9, undef killed $x8, %jump-table.2
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BR killed $x10
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bb.6:
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; First destination is (2^20 - 4) after reference. Just reachable by ADR so can use compressed table.
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dead $xzr = SPACE 1048556, undef $xzr
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bb.7:
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; CHECK-LABEL: bb.7
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; CHECK: JumpTableDest32
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early-clobber $x10, dead early-clobber $x11 = JumpTableDest32 undef killed $x9, undef killed $x8, %jump-table.3
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BR killed $x10
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bb.8:
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; First destination is 2^20 after reference. Compressed table cannot reach it.
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dead $xzr = SPACE 1048560, undef $xzr
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bb.9:
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; First destination is 2^20 before reference. Just within reach of ADR.
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dead $xzr = SPACE 1048576, undef $xzr
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bb.10:
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; CHECK-LABEL: bb.10
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; CHECK: JumpTableDest8
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early-clobber $x10, dead early-clobber $x11 = JumpTableDest32 undef killed $x9, undef killed $x8, %jump-table.4
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BR killed $x10
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bb.11:
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; First destination is 2^20 before reference. Just within reach of ADR.
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dead $xzr = SPACE 1048580, undef $xzr
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bb.12:
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; CHECK-LABEL: bb.12
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; CHECK: JumpTableDest32
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early-clobber $x10, dead early-clobber $x11 = JumpTableDest32 undef killed $x9, undef killed $x8, %jump-table.5
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BR killed $x10
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...
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