derek.holloway
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65 lines
2.2 KiB
YAML
65 lines
2.2 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
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# RUN: llc -start-before=greedy -stop-after=virtregrewriter -o - %s | FileCheck %s
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--- |
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target triple = "aarch64"
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define aarch64_sve_vector_pcs void @regalloc_hint_cmp_dont_introduce_csr_spill() #0 { unreachable }
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define aarch64_sve_vector_pcs void @regalloc_hint_cmp_reuse_p4() #0 { unreachable }
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attributes #0 = { "target-features"="+sve" }
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...
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# When suggesting a regalloc hint to choose a distinct destination register for %0,
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# avoid using a callee-save register as that will require a spill/fill.
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---
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name: regalloc_hint_cmp_dont_introduce_csr_spill
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0, $z0, $z1, $p0, $p1, $p2, $p3
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; CHECK-LABEL: name: regalloc_hint_cmp_dont_introduce_csr_spill
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; CHECK: liveins: $p0, $p1, $p2, $p3, $x0, $z0, $z1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: renamable $p0 = CMPEQ_PPzZZ_B $p0, $z0, $z1, implicit-def dead $nzcv
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; CHECK-NEXT: FAKE_USE $p1
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; CHECK-NEXT: FAKE_USE $p2
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; CHECK-NEXT: FAKE_USE $p3
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; CHECK-NEXT: ST1B_IMM $z0, killed renamable $p0, $x0, 0
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; CHECK-NEXT: RET_ReallyLR
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%0:ppr_3b = CMPEQ_PPzZZ_B $p0, $z0, $z1, implicit-def dead $nzcv
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FAKE_USE $p1
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FAKE_USE $p2
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FAKE_USE $p3
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ST1B_IMM $z0, %0, $x0, 0
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RET_ReallyLR
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...
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# For this test, the register allocator can safely reuse $p4 because it was already clobbered
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# for other purposes.
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---
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name: regalloc_hint_cmp_reuse_p4
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $x0, $z0, $z1, $p0, $p1, $p2, $p3
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; CHECK-LABEL: name: regalloc_hint_cmp_reuse_p4
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; CHECK: liveins: $p0, $p1, $p2, $p3, $x0, $z0, $z1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: $p4 = IMPLICIT_DEF
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; CHECK-NEXT: renamable $p4 = CMPEQ_PPzZZ_B $p0, $z0, $z1, implicit-def dead $nzcv
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; CHECK-NEXT: FAKE_USE $p1
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; CHECK-NEXT: FAKE_USE $p2
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; CHECK-NEXT: FAKE_USE $p3
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; CHECK-NEXT: ST1B_IMM $z0, killed renamable $p4, $x0, 0
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; CHECK-NEXT: RET_ReallyLR
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$p4 = IMPLICIT_DEF
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%0:ppr_3b = CMPEQ_PPzZZ_B $p0, $z0, $z1, implicit-def dead $nzcv
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FAKE_USE $p1
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FAKE_USE $p2
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FAKE_USE $p3
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ST1B_IMM $z0, %0, $x0, 0
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RET_ReallyLR
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...
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