116838b151
The method of counting resource consumption is modified to be based on "Cycles" value when DFA is not used. The calculation of ResMII is modified to total "Cycles" and divide it by the number of units for each resource. Previously, ResMII was excessive because it was assumed that resources were consumed for the cycles of "Latency" value. The method of resource reservation is modified similarly. When a value of "Cycles" is larger than 1, the resource is considered to be consumed by 1 for cycles of its length from the scheduled cycle. To realize this, ResourceManager maintains a resource table for all slots. Previously, resource consumption was always 1 for 1 cycle regardless of the value of "Cycles" or "Latency". In addition, the number of micro operations per cycle is modified to be constrained by "IssueWidth". To disable the constraint, --pipeliner-force-issue-width=100 can be used. For the case of using DFA, the scheduling results are unchanged. Reviewed By: dpenry Differential Revision: https://reviews.llvm.org/D133572
37 lines
1.2 KiB
LLVM
37 lines
1.2 KiB
LLVM
; REQUIRES: asserts
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; RUN: llc < %s -mtriple=powerpc64le-unknown-linux-gnu -verify-machineinstrs\
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; RUN: -mcpu=pwr9 --ppc-enable-pipeliner -debug-only=pipeliner 2>&1 \
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; RUN: >/dev/null | FileCheck %s
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%0 = type { i32, [16 x double] }
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; CHECK: MII = 3 MAX_II = 13 (rec=3, res=2)
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define dso_local fastcc double @_ZN3povL9polysolveEiPdS0_() unnamed_addr #0 {
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br label %1
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1: ; preds = %1, %0
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br i1 undef, label %2, label %1
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2: ; preds = %1
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br i1 undef, label %14, label %3
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3: ; preds = %3, %2
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%4 = phi i64 [ %7, %3 ], [ undef, %2 ]
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%5 = phi double [ %11, %3 ], [ undef, %2 ]
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%6 = phi i64 [ %12, %3 ], [ undef, %2 ]
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%7 = add nsw i64 %4, -1
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%8 = fmul fast double %5, 1.000000e+07
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%9 = getelementptr inbounds %0, %0* null, i64 1, i32 1, i64 %7
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%10 = load double, double* %9, align 8
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%11 = fadd fast double %10, %8
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%12 = add i64 %6, -1
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%13 = icmp eq i64 %12, 0
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br i1 %13, label %14, label %3
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14: ; preds = %3, %2
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%15 = phi double [ undef, %2 ], [ %11, %3 ]
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%16 = fmul fast double %15, undef
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ret double %16
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}
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