a45f301f7a
It caused assertions to fire when building Chromium:
lib/CodeGen/LiveDebugValues.cpp:331: bool
{anonymous}::LiveDebugValues::OpenRangesSet::empty() const: Assertion
`Vars.empty() == VarLocs.empty() && "open ranges are inconsistent"' failed.
See https://crbug.com/992871#c3 for how to reproduce.
> Patch https://reviews.llvm.org/D43256 introduced more aggressive loop layout optimization which depends on profile information. If profile information is not available, the statically estimated profile information(generated by BranchProbabilityInfo.cpp) is used. If user program doesn't behave as BranchProbabilityInfo.cpp expected, the layout may be worse.
>
> To be conservative this patch restores the original layout algorithm in plain mode. But user can still try the aggressive layout optimization with -force-precise-rotation-cost=true.
>
> Differential Revision: https://reviews.llvm.org/D65673
llvm-svn: 368579
140 lines
6.5 KiB
LLVM
140 lines
6.5 KiB
LLVM
; RUN: llc -mtriple=i686-- < %s | FileCheck %s
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@Te0 = external global [256 x i32] ; <[256 x i32]*> [#uses=5]
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@Te1 = external global [256 x i32] ; <[256 x i32]*> [#uses=4]
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@Te3 = external global [256 x i32] ; <[256 x i32]*> [#uses=2]
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; CHECK: %entry
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; CHECK: %bb
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; CHECK: %bb1
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; CHECK: %bb2
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define void @t(i8* nocapture %in, i8* nocapture %out, i32* nocapture %rk, i32 %r) nounwind ssp {
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entry:
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%0 = load i32, i32* %rk, align 4 ; <i32> [#uses=1]
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%1 = getelementptr i32, i32* %rk, i64 1 ; <i32*> [#uses=1]
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%2 = load i32, i32* %1, align 4 ; <i32> [#uses=1]
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%tmp15 = add i32 %r, -1 ; <i32> [#uses=1]
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%tmp.16 = zext i32 %tmp15 to i64 ; <i64> [#uses=2]
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br label %bb
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bb: ; preds = %bb1, %entry
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%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %bb1 ] ; <i64> [#uses=3]
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%s1.0 = phi i32 [ %2, %entry ], [ %56, %bb1 ] ; <i32> [#uses=2]
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%s0.0 = phi i32 [ %0, %entry ], [ %43, %bb1 ] ; <i32> [#uses=2]
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%tmp18 = shl i64 %indvar, 4 ; <i64> [#uses=4]
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%rk26 = bitcast i32* %rk to i8* ; <i8*> [#uses=6]
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%3 = lshr i32 %s0.0, 24 ; <i32> [#uses=1]
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%4 = zext i32 %3 to i64 ; <i64> [#uses=1]
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%5 = getelementptr [256 x i32], [256 x i32]* @Te0, i64 0, i64 %4 ; <i32*> [#uses=1]
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%6 = load i32, i32* %5, align 4 ; <i32> [#uses=1]
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%7 = lshr i32 %s1.0, 16 ; <i32> [#uses=1]
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%8 = and i32 %7, 255 ; <i32> [#uses=1]
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%9 = zext i32 %8 to i64 ; <i64> [#uses=1]
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%10 = getelementptr [256 x i32], [256 x i32]* @Te1, i64 0, i64 %9 ; <i32*> [#uses=1]
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%11 = load i32, i32* %10, align 4 ; <i32> [#uses=1]
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%ctg2.sum2728 = or i64 %tmp18, 8 ; <i64> [#uses=1]
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%12 = getelementptr i8, i8* %rk26, i64 %ctg2.sum2728 ; <i8*> [#uses=1]
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%13 = bitcast i8* %12 to i32* ; <i32*> [#uses=1]
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%14 = load i32, i32* %13, align 4 ; <i32> [#uses=1]
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%15 = xor i32 %11, %6 ; <i32> [#uses=1]
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%16 = xor i32 %15, %14 ; <i32> [#uses=3]
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%17 = lshr i32 %s1.0, 24 ; <i32> [#uses=1]
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%18 = zext i32 %17 to i64 ; <i64> [#uses=1]
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%19 = getelementptr [256 x i32], [256 x i32]* @Te0, i64 0, i64 %18 ; <i32*> [#uses=1]
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%20 = load i32, i32* %19, align 4 ; <i32> [#uses=1]
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%21 = and i32 %s0.0, 255 ; <i32> [#uses=1]
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%22 = zext i32 %21 to i64 ; <i64> [#uses=1]
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%23 = getelementptr [256 x i32], [256 x i32]* @Te3, i64 0, i64 %22 ; <i32*> [#uses=1]
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%24 = load i32, i32* %23, align 4 ; <i32> [#uses=1]
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%ctg2.sum2930 = or i64 %tmp18, 12 ; <i64> [#uses=1]
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%25 = getelementptr i8, i8* %rk26, i64 %ctg2.sum2930 ; <i8*> [#uses=1]
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%26 = bitcast i8* %25 to i32* ; <i32*> [#uses=1]
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%27 = load i32, i32* %26, align 4 ; <i32> [#uses=1]
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%28 = xor i32 %24, %20 ; <i32> [#uses=1]
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%29 = xor i32 %28, %27 ; <i32> [#uses=4]
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%30 = lshr i32 %16, 24 ; <i32> [#uses=1]
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%31 = zext i32 %30 to i64 ; <i64> [#uses=1]
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%32 = getelementptr [256 x i32], [256 x i32]* @Te0, i64 0, i64 %31 ; <i32*> [#uses=1]
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%33 = load i32, i32* %32, align 4 ; <i32> [#uses=2]
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%exitcond = icmp eq i64 %indvar, %tmp.16 ; <i1> [#uses=1]
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br i1 %exitcond, label %bb2, label %bb1
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bb1: ; preds = %bb
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%ctg2.sum31 = add i64 %tmp18, 16 ; <i64> [#uses=1]
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%34 = getelementptr i8, i8* %rk26, i64 %ctg2.sum31 ; <i8*> [#uses=1]
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%35 = bitcast i8* %34 to i32* ; <i32*> [#uses=1]
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%36 = lshr i32 %29, 16 ; <i32> [#uses=1]
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%37 = and i32 %36, 255 ; <i32> [#uses=1]
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%38 = zext i32 %37 to i64 ; <i64> [#uses=1]
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%39 = getelementptr [256 x i32], [256 x i32]* @Te1, i64 0, i64 %38 ; <i32*> [#uses=1]
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%40 = load i32, i32* %39, align 4 ; <i32> [#uses=1]
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%41 = load i32, i32* %35, align 4 ; <i32> [#uses=1]
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%42 = xor i32 %40, %33 ; <i32> [#uses=1]
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%43 = xor i32 %42, %41 ; <i32> [#uses=1]
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%44 = lshr i32 %29, 24 ; <i32> [#uses=1]
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%45 = zext i32 %44 to i64 ; <i64> [#uses=1]
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%46 = getelementptr [256 x i32], [256 x i32]* @Te0, i64 0, i64 %45 ; <i32*> [#uses=1]
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%47 = load i32, i32* %46, align 4 ; <i32> [#uses=1]
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%48 = and i32 %16, 255 ; <i32> [#uses=1]
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%49 = zext i32 %48 to i64 ; <i64> [#uses=1]
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%50 = getelementptr [256 x i32], [256 x i32]* @Te3, i64 0, i64 %49 ; <i32*> [#uses=1]
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%51 = load i32, i32* %50, align 4 ; <i32> [#uses=1]
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%ctg2.sum32 = add i64 %tmp18, 20 ; <i64> [#uses=1]
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%52 = getelementptr i8, i8* %rk26, i64 %ctg2.sum32 ; <i8*> [#uses=1]
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%53 = bitcast i8* %52 to i32* ; <i32*> [#uses=1]
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%54 = load i32, i32* %53, align 4 ; <i32> [#uses=1]
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%55 = xor i32 %51, %47 ; <i32> [#uses=1]
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%56 = xor i32 %55, %54 ; <i32> [#uses=1]
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%indvar.next = add i64 %indvar, 1 ; <i64> [#uses=1]
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br label %bb
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bb2: ; preds = %bb
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%tmp10 = shl i64 %tmp.16, 4 ; <i64> [#uses=2]
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%ctg2.sum = add i64 %tmp10, 16 ; <i64> [#uses=1]
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%tmp1213 = getelementptr i8, i8* %rk26, i64 %ctg2.sum ; <i8*> [#uses=1]
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%57 = bitcast i8* %tmp1213 to i32* ; <i32*> [#uses=1]
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%58 = and i32 %33, -16777216 ; <i32> [#uses=1]
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%59 = lshr i32 %29, 16 ; <i32> [#uses=1]
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%60 = and i32 %59, 255 ; <i32> [#uses=1]
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%61 = zext i32 %60 to i64 ; <i64> [#uses=1]
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%62 = getelementptr [256 x i32], [256 x i32]* @Te1, i64 0, i64 %61 ; <i32*> [#uses=1]
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%63 = load i32, i32* %62, align 4 ; <i32> [#uses=1]
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%64 = and i32 %63, 16711680 ; <i32> [#uses=1]
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%65 = or i32 %64, %58 ; <i32> [#uses=1]
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%66 = load i32, i32* %57, align 4 ; <i32> [#uses=1]
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%67 = xor i32 %65, %66 ; <i32> [#uses=2]
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%68 = lshr i32 %29, 8 ; <i32> [#uses=1]
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%69 = zext i32 %68 to i64 ; <i64> [#uses=1]
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%70 = getelementptr [256 x i32], [256 x i32]* @Te0, i64 0, i64 %69 ; <i32*> [#uses=1]
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%71 = load i32, i32* %70, align 4 ; <i32> [#uses=1]
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%72 = and i32 %71, -16777216 ; <i32> [#uses=1]
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%73 = and i32 %16, 255 ; <i32> [#uses=1]
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%74 = zext i32 %73 to i64 ; <i64> [#uses=1]
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%75 = getelementptr [256 x i32], [256 x i32]* @Te1, i64 0, i64 %74 ; <i32*> [#uses=1]
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%76 = load i32, i32* %75, align 4 ; <i32> [#uses=1]
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%77 = and i32 %76, 16711680 ; <i32> [#uses=1]
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%78 = or i32 %77, %72 ; <i32> [#uses=1]
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%ctg2.sum25 = add i64 %tmp10, 20 ; <i64> [#uses=1]
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%79 = getelementptr i8, i8* %rk26, i64 %ctg2.sum25 ; <i8*> [#uses=1]
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%80 = bitcast i8* %79 to i32* ; <i32*> [#uses=1]
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%81 = load i32, i32* %80, align 4 ; <i32> [#uses=1]
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%82 = xor i32 %78, %81 ; <i32> [#uses=2]
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%83 = lshr i32 %67, 24 ; <i32> [#uses=1]
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%84 = trunc i32 %83 to i8 ; <i8> [#uses=1]
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store i8 %84, i8* %out, align 1
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%85 = lshr i32 %67, 16 ; <i32> [#uses=1]
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%86 = trunc i32 %85 to i8 ; <i8> [#uses=1]
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%87 = getelementptr i8, i8* %out, i64 1 ; <i8*> [#uses=1]
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store i8 %86, i8* %87, align 1
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%88 = getelementptr i8, i8* %out, i64 4 ; <i8*> [#uses=1]
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%89 = lshr i32 %82, 24 ; <i32> [#uses=1]
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%90 = trunc i32 %89 to i8 ; <i8> [#uses=1]
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store i8 %90, i8* %88, align 1
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%91 = lshr i32 %82, 16 ; <i32> [#uses=1]
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%92 = trunc i32 %91 to i8 ; <i8> [#uses=1]
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%93 = getelementptr i8, i8* %out, i64 5 ; <i8*> [#uses=1]
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store i8 %92, i8* %93, align 1
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ret void
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}
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