128 lines
3.9 KiB
YAML
128 lines
3.9 KiB
YAML
# RUN: llc -mtriple=aarch64-arm-none-eabi -run-pass=prologepilog \
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# RUN: -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s
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# Check that we save LR to a callee-saved register when possible.
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# foo() should use a callee-saved register. However, bar() should not.
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--- |
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define void @foo() #0 {
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ret void
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}
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define void @bar() #0 {
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ret void
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}
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attributes #0 = { nounwind "sign-return-address"="non-leaf" "sign-return-address-key"="b_key" minsize noinline noredzone "frame-pointer"="all" }
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...
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---
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# CHECK-LABEL: name: foo
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# CHECK: bb.0:
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# CHECK: frame-setup EMITBKEY
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# CHECK-NEXT: frame-setup PACIBSP
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# CHECK-NEXT: frame-setup CFI_INSTRUCTION negate_ra_sign_state
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# CHECK: bb.1:
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# CHECK: BL @[[OUTLINED_FUNCTION:OUTLINED_FUNCTION_[0-9]+]]
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# CHECK: bb.2:
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# CHECK: BL @[[OUTLINED_FUNCTION]]
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# CHECK: bb.3:
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# CHECK: BL @[[OUTLINED_FUNCTION]]
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# CHECK: bb.4:
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# CHECK: BL @[[OUTLINED_FUNCTION]]
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# CHECK: bb.5:
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# CHECK: frame-destroy AUTIBSP
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# CHECK-NEXT: RET
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name: foo
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tracksRegLiveness: true
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fixedStack:
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body: |
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bb.0:
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$x25 = ORRXri $xzr, 1
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$lr = ORRXri $xzr, 1
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bb.1:
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liveins: $lr, $w9
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 2
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bb.2:
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liveins: $lr, $w9
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 2
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bb.3:
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liveins: $lr, $w9
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 2
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bb.4:
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liveins: $lr, $w9
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 1
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$w9 = ORRWri $wzr, 2
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bb.5:
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liveins: $w9
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RET undef $lr
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...
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---
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# CHECK: name: bar
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# CHECK: bb.0:
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# CHECK-NOT: OUTLINED_FUNCTION_
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# CHECK: bb.1:
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# CHECK-NOT: OUTLINED_FUNCTION_
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# CHECK: bb.2:
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# CHECK-NOT: OUTLINED_FUNCTION_
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# CHECK: bb.3:
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# CHECK-NOT: OUTLINED_FUNCTION_
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# CHECK: RET
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name: bar
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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, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w12 = ORRWri $wzr, 2
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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, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w12 = ORRWri $wzr, 2
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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, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w10 = ORRWri $wzr, 1
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$w12 = ORRWri $wzr, 2
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bb.3:
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liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28
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RET undef $lr
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# CHECK: name: [[OUTLINED_FUNCTION]]
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# CHECK: body:
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# CHECK-NEXT: bb.0:
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# CHECK-NOT: frame-setup EMITBKEY
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# CHECK-NOT: frame-setup PACI{{[A,B]]}}SP
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# CHECK-NOT: frame-setup CFI_INSTRUCTION negate_ra_sign_state
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# CHECK-NOT: frame-destroy AUTI{{[A,B]]}}SP
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