derek.holloway
7502bf64a4
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56 lines
2.2 KiB
LLVM
56 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -stop-after=prologepilog -simplify-mir -o - %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "arm64e-apple-ios18.0"
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declare void @spam()
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; This test checks that the live-in flags for LR are correctly set when LR is reserved, but live for a call.
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define i32 @check_lr_liveness(ptr %arg) #1 {
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; CHECK-LABEL: name: check_lr_liveness
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; CHECK: bb.0.bb:
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; CHECK-NEXT: successors: %bb.4(0x20000000), %bb.1(0x60000000)
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; CHECK-NEXT: liveins: $x0, $lr
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: renamable $x8 = COPY $x0
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; CHECK-NEXT: renamable $w0 = MOVi32imm -536870206
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; CHECK-NEXT: CBNZX killed renamable $x8, %bb.1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.4:
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; CHECK-NEXT: liveins: $w0, $lr
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: B %bb.3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1.bb:
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; CHECK-NEXT: liveins: $w0, $lr
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: B %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2.bb1:
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; CHECK-NEXT: liveins: $lr
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -2 :: (store (s64) into %stack.1), (store (s64) into %stack.0)
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; CHECK-NEXT: BL @spam, csr_darwin_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
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; CHECK-NEXT: renamable $w0 = COPY $wzr
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; CHECK-NEXT: early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2 :: (load (s64) from %stack.1), (load (s64) from %stack.0)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.3.bb2:
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; CHECK-NEXT: liveins: $w0, $lr
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: RET_ReallyLR implicit $w0
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bb:
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%icmp = icmp eq ptr %arg, null
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%or = or i1 %icmp, false
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br i1 %or, label %bb2, label %bb1
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bb1: ; preds = %bb
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call void @spam()
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br label %bb2
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bb2: ; preds = %bb1, %bb
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%phi = phi i32 [ -536870206, %bb ], [ 0, %bb1 ]
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ret i32 %phi
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}
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attributes #1 = { minsize nounwind "target-features"="+aes,+crc,+fp-armv8,+fullfp16,+lse,+neon,+ras,+rcpc,+rdm,+reserve-lr-for-ra,+sha2,+v8.1a,+v8.2a,+v8.3a,+v8a" }
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