derek.holloway
7502bf64a4
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113 lines
4.4 KiB
YAML
113 lines
4.4 KiB
YAML
# RUN: llc -mtriple=aarch64--- -run-pass=machine-outliner \
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# RUN: -verify-machineinstrs %s -o - | FileCheck %s
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# Show that, when instructions that use the stack are present, it's possible
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# for us to outline everything as the default outlining type.
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# It's possible for reg-save-possible to outline by storing LR to a register,
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# but most candidates in this case require us to modify the stack. The outliner
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# should see that it's more beneficial to fix up instructions and save LR to
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# the stack in this case.
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--- |
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define void @reg-save-possible() #0 { ret void }
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define void @stack-save1() #0 { ret void }
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define void @stack-save2() #0 { ret void }
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define void @stack-save3() #0 { ret void }
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attributes #0 = { minsize noinline noredzone "frame-pointer"="all" }
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...
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---
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name: reg-save-possible
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $lr
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$lr = ORRXri $xzr, 1
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$x19 = ORRXri $xzr, 1
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$x20 = ORRXri $xzr, 1
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bb.1:
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liveins: $lr
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; CHECK-LABEL: name: reg-save-possible
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; CHECK: $sp = STRXpre $lr, $sp, -16
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; CHECK-NEXT: BL [[FN:@OUTLINED_FUNCTION_[0-9]+]]
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; CHECK-NEXT: $sp, $lr = LDRXpost $sp, 16
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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bb.2:
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RET undef $lr
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...
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---
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name: stack-save1
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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$lr = ORRXri $xzr, 1
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bb.1:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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; CHECK-LABEL: name: stack-save1
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; CHECK: $sp = STRXpre $lr, $sp, -16
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; CHECK-NEXT: BL [[FN]]
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; CHECK-NEXT: $sp, $lr = LDRXpost $sp, 16
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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bb.2:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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RET undef $lr
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...
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---
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name: stack-save2
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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$lr = ORRXri $xzr, 1
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bb.1:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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; CHECK-LABEL: name: stack-save2
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; CHECK: $sp = STRXpre $lr, $sp, -16
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; CHECK-NEXT: BL [[FN]]
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; CHECK-NEXT: $sp, $lr = LDRXpost $sp, 16
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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bb.2:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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RET undef $lr
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...
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---
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name: stack-save3
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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$lr = ORRXri $xzr, 1
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bb.1:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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; CHECK-LABEL: name: stack-save3
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; CHECK: $sp = STRXpre $lr, $sp, -16
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; CHECK-NEXT: BL [[FN]]
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; CHECK-NEXT: $sp, $lr = LDRXpost $sp, 16
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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$x20, $x19 = LDPXi $sp, 10
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bb.2:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp
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RET undef $lr
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