mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-11 09:29:20 +00:00
8adae96fd9
The previous change to local live range allocation also suppressed eviction of local ranges. In rare cases, this could result in more expensive register choices. This commit actually revives a feature that I added long ago: check if live ranges can be reassigned before eviction. But now it only happens in rare cases of evicting a local live range because another local live range wants a cheaper register. The benefit is improved code size for some benchmarks on x86 and armv7. I measured no significant compile time increase and performance changes are noise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187140 91177308-0d34-0410-b5e6-96231b3b80d8
225 lines
11 KiB
LLVM
225 lines
11 KiB
LLVM
; REQUIRES: asserts
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; RUN: llc < %s -march=x86-64 -mcpu=core2 -pre-RA-sched=source -enable-misched -stats 2>&1 | FileCheck %s
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;
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; Verify that register pressure heuristics are working in MachineScheduler.
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;
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; When we enable subtree scheduling heuristics on X86, we may need a
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; flag to disable it for this test case.
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;
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; CHECK: @wrap_mul4
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; CHECK: 22 regalloc - Number of spills inserted
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define void @wrap_mul4(double* nocapture %Out, [4 x double]* nocapture %A, [4 x double]* nocapture %B) #0 {
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entry:
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%arrayidx1.i = getelementptr inbounds [4 x double]* %A, i64 0, i64 0
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%0 = load double* %arrayidx1.i, align 8
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%arrayidx3.i = getelementptr inbounds [4 x double]* %B, i64 0, i64 0
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%1 = load double* %arrayidx3.i, align 8
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%mul.i = fmul double %0, %1
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%arrayidx5.i = getelementptr inbounds [4 x double]* %A, i64 0, i64 1
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%2 = load double* %arrayidx5.i, align 8
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%arrayidx7.i = getelementptr inbounds [4 x double]* %B, i64 1, i64 0
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%3 = load double* %arrayidx7.i, align 8
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%mul8.i = fmul double %2, %3
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%add.i = fadd double %mul.i, %mul8.i
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%arrayidx10.i = getelementptr inbounds [4 x double]* %A, i64 0, i64 2
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%4 = load double* %arrayidx10.i, align 8
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%arrayidx12.i = getelementptr inbounds [4 x double]* %B, i64 2, i64 0
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%5 = load double* %arrayidx12.i, align 8
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%mul13.i = fmul double %4, %5
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%add14.i = fadd double %add.i, %mul13.i
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%arrayidx16.i = getelementptr inbounds [4 x double]* %A, i64 0, i64 3
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%6 = load double* %arrayidx16.i, align 8
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%arrayidx18.i = getelementptr inbounds [4 x double]* %B, i64 3, i64 0
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%7 = load double* %arrayidx18.i, align 8
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%mul19.i = fmul double %6, %7
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%add20.i = fadd double %add14.i, %mul19.i
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%arrayidx25.i = getelementptr inbounds [4 x double]* %B, i64 0, i64 1
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%8 = load double* %arrayidx25.i, align 8
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%mul26.i = fmul double %0, %8
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%arrayidx30.i = getelementptr inbounds [4 x double]* %B, i64 1, i64 1
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%9 = load double* %arrayidx30.i, align 8
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%mul31.i = fmul double %2, %9
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%add32.i = fadd double %mul26.i, %mul31.i
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%arrayidx36.i = getelementptr inbounds [4 x double]* %B, i64 2, i64 1
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%10 = load double* %arrayidx36.i, align 8
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%mul37.i = fmul double %4, %10
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%add38.i = fadd double %add32.i, %mul37.i
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%arrayidx42.i = getelementptr inbounds [4 x double]* %B, i64 3, i64 1
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%11 = load double* %arrayidx42.i, align 8
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%mul43.i = fmul double %6, %11
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%add44.i = fadd double %add38.i, %mul43.i
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%arrayidx49.i = getelementptr inbounds [4 x double]* %B, i64 0, i64 2
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%12 = load double* %arrayidx49.i, align 8
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%mul50.i = fmul double %0, %12
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%arrayidx54.i = getelementptr inbounds [4 x double]* %B, i64 1, i64 2
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%13 = load double* %arrayidx54.i, align 8
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%mul55.i = fmul double %2, %13
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%add56.i = fadd double %mul50.i, %mul55.i
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%arrayidx60.i = getelementptr inbounds [4 x double]* %B, i64 2, i64 2
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%14 = load double* %arrayidx60.i, align 8
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%mul61.i = fmul double %4, %14
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%add62.i = fadd double %add56.i, %mul61.i
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%arrayidx66.i = getelementptr inbounds [4 x double]* %B, i64 3, i64 2
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%15 = load double* %arrayidx66.i, align 8
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%mul67.i = fmul double %6, %15
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%add68.i = fadd double %add62.i, %mul67.i
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%arrayidx73.i = getelementptr inbounds [4 x double]* %B, i64 0, i64 3
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%16 = load double* %arrayidx73.i, align 8
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%mul74.i = fmul double %0, %16
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%arrayidx78.i = getelementptr inbounds [4 x double]* %B, i64 1, i64 3
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%17 = load double* %arrayidx78.i, align 8
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%mul79.i = fmul double %2, %17
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%add80.i = fadd double %mul74.i, %mul79.i
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%arrayidx84.i = getelementptr inbounds [4 x double]* %B, i64 2, i64 3
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%18 = load double* %arrayidx84.i, align 8
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%mul85.i = fmul double %4, %18
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%add86.i = fadd double %add80.i, %mul85.i
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%arrayidx90.i = getelementptr inbounds [4 x double]* %B, i64 3, i64 3
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%19 = load double* %arrayidx90.i, align 8
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%mul91.i = fmul double %6, %19
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%add92.i = fadd double %add86.i, %mul91.i
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%arrayidx95.i = getelementptr inbounds [4 x double]* %A, i64 1, i64 0
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%20 = load double* %arrayidx95.i, align 8
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%mul98.i = fmul double %1, %20
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%arrayidx100.i = getelementptr inbounds [4 x double]* %A, i64 1, i64 1
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%21 = load double* %arrayidx100.i, align 8
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%mul103.i = fmul double %3, %21
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%add104.i = fadd double %mul98.i, %mul103.i
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%arrayidx106.i = getelementptr inbounds [4 x double]* %A, i64 1, i64 2
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%22 = load double* %arrayidx106.i, align 8
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%mul109.i = fmul double %5, %22
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%add110.i = fadd double %add104.i, %mul109.i
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%arrayidx112.i = getelementptr inbounds [4 x double]* %A, i64 1, i64 3
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%23 = load double* %arrayidx112.i, align 8
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%mul115.i = fmul double %7, %23
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%add116.i = fadd double %add110.i, %mul115.i
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%mul122.i = fmul double %8, %20
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%mul127.i = fmul double %9, %21
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%add128.i = fadd double %mul122.i, %mul127.i
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%mul133.i = fmul double %10, %22
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%add134.i = fadd double %add128.i, %mul133.i
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%mul139.i = fmul double %11, %23
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%add140.i = fadd double %add134.i, %mul139.i
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%mul146.i = fmul double %12, %20
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%mul151.i = fmul double %13, %21
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%add152.i = fadd double %mul146.i, %mul151.i
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%mul157.i = fmul double %14, %22
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%add158.i = fadd double %add152.i, %mul157.i
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%mul163.i = fmul double %15, %23
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%add164.i = fadd double %add158.i, %mul163.i
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%mul170.i = fmul double %16, %20
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%mul175.i = fmul double %17, %21
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%add176.i = fadd double %mul170.i, %mul175.i
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%mul181.i = fmul double %18, %22
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%add182.i = fadd double %add176.i, %mul181.i
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%mul187.i = fmul double %19, %23
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%add188.i = fadd double %add182.i, %mul187.i
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%arrayidx191.i = getelementptr inbounds [4 x double]* %A, i64 2, i64 0
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%24 = load double* %arrayidx191.i, align 8
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%mul194.i = fmul double %1, %24
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%arrayidx196.i = getelementptr inbounds [4 x double]* %A, i64 2, i64 1
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%25 = load double* %arrayidx196.i, align 8
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%mul199.i = fmul double %3, %25
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%add200.i = fadd double %mul194.i, %mul199.i
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%arrayidx202.i = getelementptr inbounds [4 x double]* %A, i64 2, i64 2
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%26 = load double* %arrayidx202.i, align 8
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%mul205.i = fmul double %5, %26
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%add206.i = fadd double %add200.i, %mul205.i
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%arrayidx208.i = getelementptr inbounds [4 x double]* %A, i64 2, i64 3
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%27 = load double* %arrayidx208.i, align 8
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%mul211.i = fmul double %7, %27
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%add212.i = fadd double %add206.i, %mul211.i
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%mul218.i = fmul double %8, %24
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%mul223.i = fmul double %9, %25
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%add224.i = fadd double %mul218.i, %mul223.i
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%mul229.i = fmul double %10, %26
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%add230.i = fadd double %add224.i, %mul229.i
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%mul235.i = fmul double %11, %27
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%add236.i = fadd double %add230.i, %mul235.i
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%mul242.i = fmul double %12, %24
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%mul247.i = fmul double %13, %25
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%add248.i = fadd double %mul242.i, %mul247.i
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%mul253.i = fmul double %14, %26
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%add254.i = fadd double %add248.i, %mul253.i
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%mul259.i = fmul double %15, %27
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%add260.i = fadd double %add254.i, %mul259.i
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%mul266.i = fmul double %16, %24
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%mul271.i = fmul double %17, %25
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%add272.i = fadd double %mul266.i, %mul271.i
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%mul277.i = fmul double %18, %26
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%add278.i = fadd double %add272.i, %mul277.i
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%mul283.i = fmul double %19, %27
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%add284.i = fadd double %add278.i, %mul283.i
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%arrayidx287.i = getelementptr inbounds [4 x double]* %A, i64 3, i64 0
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%28 = load double* %arrayidx287.i, align 8
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%mul290.i = fmul double %1, %28
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%arrayidx292.i = getelementptr inbounds [4 x double]* %A, i64 3, i64 1
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%29 = load double* %arrayidx292.i, align 8
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%mul295.i = fmul double %3, %29
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%add296.i = fadd double %mul290.i, %mul295.i
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%arrayidx298.i = getelementptr inbounds [4 x double]* %A, i64 3, i64 2
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%30 = load double* %arrayidx298.i, align 8
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%mul301.i = fmul double %5, %30
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%add302.i = fadd double %add296.i, %mul301.i
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%arrayidx304.i = getelementptr inbounds [4 x double]* %A, i64 3, i64 3
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%31 = load double* %arrayidx304.i, align 8
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%mul307.i = fmul double %7, %31
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%add308.i = fadd double %add302.i, %mul307.i
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%mul314.i = fmul double %8, %28
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%mul319.i = fmul double %9, %29
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%add320.i = fadd double %mul314.i, %mul319.i
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%mul325.i = fmul double %10, %30
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%add326.i = fadd double %add320.i, %mul325.i
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%mul331.i = fmul double %11, %31
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%add332.i = fadd double %add326.i, %mul331.i
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%mul338.i = fmul double %12, %28
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%mul343.i = fmul double %13, %29
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%add344.i = fadd double %mul338.i, %mul343.i
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%mul349.i = fmul double %14, %30
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%add350.i = fadd double %add344.i, %mul349.i
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%mul355.i = fmul double %15, %31
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%add356.i = fadd double %add350.i, %mul355.i
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%mul362.i = fmul double %16, %28
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%mul367.i = fmul double %17, %29
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%add368.i = fadd double %mul362.i, %mul367.i
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%mul373.i = fmul double %18, %30
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%add374.i = fadd double %add368.i, %mul373.i
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%mul379.i = fmul double %19, %31
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%add380.i = fadd double %add374.i, %mul379.i
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store double %add20.i, double* %Out, align 8
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%Res.i.sroa.1.8.idx2 = getelementptr inbounds double* %Out, i64 1
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store double %add44.i, double* %Res.i.sroa.1.8.idx2, align 8
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%Res.i.sroa.2.16.idx4 = getelementptr inbounds double* %Out, i64 2
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store double %add68.i, double* %Res.i.sroa.2.16.idx4, align 8
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%Res.i.sroa.3.24.idx6 = getelementptr inbounds double* %Out, i64 3
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store double %add92.i, double* %Res.i.sroa.3.24.idx6, align 8
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%Res.i.sroa.4.32.idx8 = getelementptr inbounds double* %Out, i64 4
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store double %add116.i, double* %Res.i.sroa.4.32.idx8, align 8
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%Res.i.sroa.5.40.idx10 = getelementptr inbounds double* %Out, i64 5
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store double %add140.i, double* %Res.i.sroa.5.40.idx10, align 8
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%Res.i.sroa.6.48.idx12 = getelementptr inbounds double* %Out, i64 6
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store double %add164.i, double* %Res.i.sroa.6.48.idx12, align 8
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%Res.i.sroa.7.56.idx14 = getelementptr inbounds double* %Out, i64 7
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store double %add188.i, double* %Res.i.sroa.7.56.idx14, align 8
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%Res.i.sroa.8.64.idx16 = getelementptr inbounds double* %Out, i64 8
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store double %add212.i, double* %Res.i.sroa.8.64.idx16, align 8
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%Res.i.sroa.9.72.idx18 = getelementptr inbounds double* %Out, i64 9
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store double %add236.i, double* %Res.i.sroa.9.72.idx18, align 8
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%Res.i.sroa.10.80.idx20 = getelementptr inbounds double* %Out, i64 10
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store double %add260.i, double* %Res.i.sroa.10.80.idx20, align 8
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%Res.i.sroa.11.88.idx22 = getelementptr inbounds double* %Out, i64 11
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store double %add284.i, double* %Res.i.sroa.11.88.idx22, align 8
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%Res.i.sroa.12.96.idx24 = getelementptr inbounds double* %Out, i64 12
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store double %add308.i, double* %Res.i.sroa.12.96.idx24, align 8
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%Res.i.sroa.13.104.idx26 = getelementptr inbounds double* %Out, i64 13
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store double %add332.i, double* %Res.i.sroa.13.104.idx26, align 8
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%Res.i.sroa.14.112.idx28 = getelementptr inbounds double* %Out, i64 14
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store double %add356.i, double* %Res.i.sroa.14.112.idx28, align 8
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%Res.i.sroa.15.120.idx30 = getelementptr inbounds double* %Out, i64 15
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store double %add380.i, double* %Res.i.sroa.15.120.idx30, align 8
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ret void
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}
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attributes #0 = { noinline nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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