81 lines
2.6 KiB
YAML
81 lines
2.6 KiB
YAML
# RUN: llc --verify-machineinstrs -mtriple=aarch64 -o - %s -run-pass pipeliner -aarch64-enable-pipeliner -pipeliner-enable-copytophi=0 -debug-only=pipeliner 2>&1 | FileCheck %s
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# REQUIRES: asserts
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# An acceptable loop by pipeliner TBB == LoopBB, FBB == ExitBB, Compare and branch
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# CHECK: Schedule Found? 1
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--- |
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define dso_local void @func(ptr noalias nocapture noundef writeonly %a, ptr nocapture noundef readonly %b, i32 noundef %n) local_unnamed_addr #0 {
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entry:
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%or.cond = icmp ult i32 %n, 2
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br i1 %or.cond, label %for.end, label %for.body.preheader
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for.body.preheader: ; preds = %entry
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%i.07 = add i32 %n, -1
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%0 = sext i32 %i.07 to i64
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%1 = shl nsw i64 %indvars.iv, 2
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%scevgep = getelementptr i8, ptr %b, i64 %1
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%2 = load float, ptr %scevgep, align 4
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%add = fadd float %2, 1.000000e+00
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%3 = shl nsw i64 %indvars.iv, 2
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%scevgep11 = getelementptr i8, ptr %a, i64 %3
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store float %add, ptr %scevgep11, align 4
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%indvars.iv.next = add nsw i64 %indvars.iv, -1
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%4 = add i64 %indvars.iv, -1
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%5 = and i64 %4, 4294967295
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%tobool.not = icmp eq i64 %5, 0
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br i1 %tobool.not, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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ret void
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}
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...
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---
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name: func
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tracksRegLiveness: true
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liveins:
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- { reg: '$x0', virtual-reg: '%3' }
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- { reg: '$x1', virtual-reg: '%4' }
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- { reg: '$w2', virtual-reg: '%5' }
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body: |
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bb.0.entry:
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liveins: $x0, $x1, $w2
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%5:gpr32common = COPY $w2
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%4:gpr64common = COPY $x1
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%3:gpr64common = COPY $x0
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dead $wzr = SUBSWri %5, 2, 0, implicit-def $nzcv
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Bcc 3, %bb.3, implicit $nzcv
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B %bb.1
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bb.1.for.body.preheader:
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%7:gpr32common = SUBWri %5, 1, 0
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%9:gpr64all = IMPLICIT_DEF
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%8:gpr64 = SUBREG_TO_REG 0, killed %7, %subreg.sub_32
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%10:gpr64 = SBFMXri killed %8, 0, 31
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%0:gpr64all = COPY %10
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%12:fpr32 = FMOVSi 112
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bb.2.for.body:
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successors: %bb.3(0x04000000), %bb.2(0x7c000000)
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%1:gpr64common = PHI %0, %bb.1, %2, %bb.2
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%11:fpr32 = LDRSroX %4, %1, 0, 1 :: (load (s32) from %ir.scevgep)
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%13:fpr32 = nofpexcept FADDSrr killed %11, %12, implicit $fpcr
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STRSroX killed %13, %3, %1, 0, 1 :: (store (s32) into %ir.scevgep11)
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%14:gpr64common = SUBXri %1, 1, 0
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%2:gpr64all = COPY %14
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%15:gpr32 = COPY %14.sub_32
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CBNZW killed %15, %bb.2
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B %bb.3
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bb.3.for.end:
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RET_ReallyLR
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...
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