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4c87e73bbe
Extend the live-in check for all aliased registers so that we can allow sinking Copy instructions when only implicit def is in successor's live-in. llvm-svn: 331072
401 lines
8.0 KiB
YAML
401 lines
8.0 KiB
YAML
# RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass=postra-machine-sink -verify-machineinstrs -o - %s | FileCheck %s
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---
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# Sink w19 to %bb.1.
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# CHECK-LABEL: name: sinkcopy1
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: $w19 = COPY killed $w0
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# CHECK-LABEL: bb.1:
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# CHECK: liveins: $w1, $w0
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# CHECK: renamable $w19 = COPY killed $w0
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name: sinkcopy1
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY killed $w0
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Bcc 11, %bb.1, implicit $nzcv
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B %bb.2
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bb.1:
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liveins: $w1, $w19
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$w0 = ADDWrr $w1, $w19
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RET $x0
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bb.2:
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$w0 = COPY $wzr
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RET $x0
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...
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---
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# Sink w19 to %bb.2.
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# CHECK-LABEL: name: sinkcopy2
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: renamable $w19 = COPY killed $w0
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# CHECK-LABEL: bb.2:
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# CHECK: liveins: $w1, $w0
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# CHECK: renamable $w19 = COPY killed $w0
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name: sinkcopy2
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY killed $w0
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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$w0 = COPY $wzr
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RET $x0
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bb.2:
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liveins: $w1, $w19
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$w0 = ADDWrr $w1, $w19
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RET $x0
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...
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---
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# Sink w19 and w20 to %bb.1.
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# CHECK-LABEL: name: sinkcopy3
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: renamable $w19 = COPY killed $w0
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# CHECK-LABEL: bb.1:
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# CHECK: liveins: $w1, $w0
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# CHECK: renamable $w19 = COPY killed $w0
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# CHECK: renamable $w20 = COPY killed $w1
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name: sinkcopy3
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY killed $w0
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renamable $w20 = COPY killed $w1
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bb.1:
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liveins: $w19, $w20
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$w0 = COPY $w19
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$w1 = COPY $w20
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RET $x0
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...
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# Sink w19 to %bb.1 and w20 to %bb.2.
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# CHECK-LABEL: name: sinkcopy4
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: renamable $w19 = COPY killed $w0
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# CHECK-NOT: renamable $w20 = COPY killed $w1
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# CHECK-LABEL: bb.1:
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# CHECK: liveins: $w1, $w0
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# CHECK: renamable $w19 = COPY killed $w0
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# CHECK-LABEL: bb.2:
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# CHECK: liveins: $w0, $w1
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# CHECK: renamable $w20 = COPY killed $w1
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name: sinkcopy4
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY killed $w0
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renamable $w20 = COPY killed $w1
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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liveins: $w1, $w19
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$w0 = ADDWrr $w1, $w19
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RET $x0
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bb.2:
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liveins: $w0, $w20
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$w0 = ADDWrr $w0, $w20
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RET $x0
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...
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# Sink w19 to %bb.3 through %bb.2.
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# CHECK-LABEL: name: sinkcopy5
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: renamable $w19 = COPY $w0
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# CHECK-LABEL: bb.2:
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# CHECK: $w1 = ADDWrr $w1, $w0
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# CHECK-LABEL: bb.3:
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# CHECK: liveins: $w1, $w0
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# CHECK: renamable $w19 = COPY killed $w0
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name: sinkcopy5
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0
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Bcc 11, %bb.2, implicit $nzcv
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bb.1:
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liveins: $x0
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$w19 = COPY $wzr
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RET $x0
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bb.2:
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liveins: $w0, $w1, $w19
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$w1 = ADDWrr $w1, killed $w0
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bb.3:
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liveins: $w1, $w19
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$w0 = ADDWrr $w1, $w19
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RET $x0
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...
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# Sink w19 to %bb.3, but through %bb.2.
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# CHECK-LABEL: name: sinkcopy6
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: renamable $w19 = COPY $w0
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# CHECK-NOT: renamable $w20 = COPY $w0
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# CHECK-LABEL: bb.2:
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# CHECK: liveins: $w1, $w0
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# CHECK: renamable $w19 = COPY $w0
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# CHECK: renamable $w20 = COPY $w19
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name: sinkcopy6
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0
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renamable $w20 = COPY $w19
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Bcc 11, %bb.2, implicit $nzcv
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bb.1:
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$w0 = COPY $wzr
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RET $x0
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bb.2:
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liveins: $w1, $w20
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$w0 = ADDWrr killed $w1, $w20
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RET $x0
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...
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---
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# Sink w19 regardless of the def of wzr in bb.0.
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# CHECK-LABEL: name: sinkcopy7
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: renamable $w19 = COPY $w0
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# CHECK-LABEL: bb.2:
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# CHECK: renamable $w19 = COPY $wzr
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name: sinkcopy7
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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renamable $w19 = COPY $wzr
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$wzr = SUBSWri $w1, 1, 0, implicit-def $nzcv
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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$x0 = COPY $xzr
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RET $x0
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bb.2:
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liveins: $w0, $w19
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$w0 = ADDWrr $w0, $w19
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RET $x0
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...
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---
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# Sink w19 to %bb.3 through %bb.2.
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# CHECK-LABEL: name: sinkcopy8
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# CHECK-LABEL: bb.0:
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# CHECK-NOT: renamable $w19 = COPY $w0, implicit-def $x19
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# CHECK-LABEL: bb.2:
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# CHECK: $w1 = ADDWrr $w1, $w0, implicit $x0
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# CHECK-LABEL: bb.3:
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# CHECK: liveins: $x1, $w0
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# CHECK: renamable $w19 = COPY killed $w0, implicit-def $x19
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name: sinkcopy8
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $x1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0, implicit-def $x19
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Bcc 11, %bb.2, implicit $nzcv
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bb.1:
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liveins: $x0
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$w19 = COPY $wzr
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RET $x0
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bb.2:
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liveins: $w0, $x1, $x19
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$w1 = ADDWrr $w1, $w0, implicit killed $x0
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bb.3:
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liveins: $x1, $x19
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$x0 = ADDXrr $x1, $x19
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RET $x0
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...
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---
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# Don't sink w19 as w0 is defined in bb.0.
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# CHECK-LABEL: name: donotsinkcopy1
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# CHECK-LABEL: bb.0:
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# CHECK: renamable $w19 = COPY $w0
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# CHECK: $w0 = LDRWui $sp, 0
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name: donotsinkcopy1
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0
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$w0 = LDRWui $sp, 0 :: (load 4)
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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$x0 = COPY $xzr
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RET $x0
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bb.2:
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liveins: $w0, $w19
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$w0 = ADDWrr $w0, $w19
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RET $x0
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...
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---
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# Don't sink w19 as w19 is used in bb.0.
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# CHECK-LABEL: name: donotsinkcopy2
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# CHECK-LABEL: bb.0:
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# CHECK: renamable $w19 = COPY $w0
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# CHECK: STRWui $w1, $x19, 0
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name: donotsinkcopy2
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0
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STRWui $w1, $x19, 0 :: (store 4)
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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$x0 = COPY $xzr
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RET $x0
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bb.2:
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liveins: $w0, $w19
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$w0 = ADDWrr $w0, $w19
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RET $x0
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...
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---
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# Don't sink w19 as w19 is used in both %bb.1 and %bb.2.
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# CHECK-LABEL: name: donotsinkcopy3
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# CHECK-LABEL: bb.0:
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# CHECK: renamable $w19 = COPY $w0
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name: donotsinkcopy3
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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liveins: $w19
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$w0 = COPY $w19
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RET $x0
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bb.2:
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liveins: $w0, $w19
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$w0 = ADDWrr $w0, $w19
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RET $x0
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...
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---
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# Don't sink w19 as %bb.2 has multiple predecessors.
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# CHECK-LABEL: name: donotsinkcopy4
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# CHECK-LABEL: bb.0:
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# CHECK: renamable $w19 = COPY $w0
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name: donotsinkcopy4
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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liveins: $w0
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$w19 = COPY $w0
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B %bb.2
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bb.2:
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liveins: $w0, $w19
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$w0 = ADDWrr $w0, $w19
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RET $x0
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...
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# Don't sink w19 after sinking w20.
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# CHECK-LABEL: name: donotsinkcopy5
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# CHECK-LABEL: bb.0:
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# CHECK: renamable $w19 = COPY $w0
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# CHECK-LABEL: bb.2:
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# CHECK: liveins: $w0, $w19
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# CHECK: renamable $w20 = COPY $w19
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name: donotsinkcopy5
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $w0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $w19 = COPY $w0
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renamable $w20 = COPY $w19
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Bcc 11, %bb.2, implicit $nzcv
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bb.1:
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liveins: $w19
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$w0 = COPY $w19
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RET $x0
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bb.2:
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liveins: $w0, $w20
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$w0 = ADDWrr killed $w0, $w20
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RET $x0
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...
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---
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# Don't sink w19 as x19 is live-in in %bb.2.
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# CHECK-LABEL: name: donotsinkcopy6
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# CHECK-LABEL: bb.0:
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name: donotsinkcopy6
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0, $w1
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$w1 = SUBSWri $w1, 1, 0, implicit-def $nzcv
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renamable $x19 = COPY $x0
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Bcc 11, %bb.2, implicit $nzcv
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B %bb.1
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bb.1:
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liveins: $w19
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$w0 = COPY $w19
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RET $x0
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bb.2:
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liveins: $x0, $x19
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$x0 = ADDXrr $x0, $x19
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RET $x0
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...
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