forked from OSchip/llvm-project
494 lines
16 KiB
LLVM
494 lines
16 KiB
LLVM
; RUN: opt < %s -passes='print<loopnest>' -disable-output 2>&1 | FileCheck %s
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; Test an imperfect 2-dim loop nest of the form:
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; for (int i = 0; i < nx; ++i) {
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; x[i] = i;
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; for (int j = 0; j < ny; ++j)
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; y[j][i] = x[i] + j;
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; }
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define void @imperf_nest_1(i32 signext %nx, i32 signext %ny) {
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; CHECK-LABEL: IsPerfect=false, Depth=2, OutermostLoop: imperf_nest_1_loop_i, Loops: ( imperf_nest_1_loop_i imperf_nest_1_loop_j )
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entry:
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%0 = zext i32 %ny to i64
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%1 = zext i32 %nx to i64
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%2 = mul nuw i64 %0, %1
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%vla = alloca double, i64 %2, align 8
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%3 = zext i32 %ny to i64
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%vla1 = alloca double, i64 %3, align 8
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br label %imperf_nest_1_loop_i
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imperf_nest_1_loop_i:
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%i2.0 = phi i32 [ 0, %entry ], [ %inc16, %for.inc15 ]
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%cmp = icmp slt i32 %i2.0, %nx
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br i1 %cmp, label %for.body, label %for.end17
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for.body:
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%conv = sitofp i32 %i2.0 to double
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%idxprom = sext i32 %i2.0 to i64
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%arrayidx = getelementptr inbounds double, double* %vla1, i64 %idxprom
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store double %conv, double* %arrayidx, align 8
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br label %imperf_nest_1_loop_j
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imperf_nest_1_loop_j:
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%j3.0 = phi i32 [ 0, %for.body ], [ %inc, %for.inc ]
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%cmp5 = icmp slt i32 %j3.0, %ny
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br i1 %cmp5, label %for.body7, label %for.end
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for.body7:
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%idxprom8 = sext i32 %i2.0 to i64
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%arrayidx9 = getelementptr inbounds double, double* %vla1, i64 %idxprom8
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%4 = load double, double* %arrayidx9, align 8
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%conv10 = sitofp i32 %j3.0 to double
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%add = fadd double %4, %conv10
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%idxprom11 = sext i32 %j3.0 to i64
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%5 = mul nsw i64 %idxprom11, %1
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%arrayidx12 = getelementptr inbounds double, double* %vla, i64 %5
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%idxprom13 = sext i32 %i2.0 to i64
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%arrayidx14 = getelementptr inbounds double, double* %arrayidx12, i64 %idxprom13
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store double %add, double* %arrayidx14, align 8
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br label %for.inc
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for.inc:
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%inc = add nsw i32 %j3.0, 1
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br label %imperf_nest_1_loop_j
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for.end:
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br label %for.inc15
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for.inc15:
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%inc16 = add nsw i32 %i2.0, 1
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br label %imperf_nest_1_loop_i
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for.end17:
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ret void
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}
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; Test an imperfect 2-dim loop nest of the form:
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; for (int i = 0; i < nx; ++i) {
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; for (int j = 0; j < ny; ++j)
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; y[j][i] = x[i] + j;
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; y[0][i] += i;
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; }
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define void @imperf_nest_2(i32 signext %nx, i32 signext %ny) {
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; CHECK-LABEL: IsPerfect=false, Depth=2, OutermostLoop: imperf_nest_2_loop_i, Loops: ( imperf_nest_2_loop_i imperf_nest_2_loop_j )
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entry:
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%0 = zext i32 %ny to i64
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%1 = zext i32 %nx to i64
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%2 = mul nuw i64 %0, %1
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%vla = alloca double, i64 %2, align 8
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%3 = zext i32 %ny to i64
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%vla1 = alloca double, i64 %3, align 8
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br label %imperf_nest_2_loop_i
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imperf_nest_2_loop_i:
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%i2.0 = phi i32 [ 0, %entry ], [ %inc17, %for.inc16 ]
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%cmp = icmp slt i32 %i2.0, %nx
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br i1 %cmp, label %for.body, label %for.end18
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for.body:
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br label %imperf_nest_2_loop_j
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imperf_nest_2_loop_j:
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%j3.0 = phi i32 [ 0, %for.body ], [ %inc, %for.inc ]
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%cmp5 = icmp slt i32 %j3.0, %ny
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br i1 %cmp5, label %for.body6, label %for.end
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for.body6:
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%idxprom = sext i32 %i2.0 to i64
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%arrayidx = getelementptr inbounds double, double* %vla1, i64 %idxprom
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%4 = load double, double* %arrayidx, align 8
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%conv = sitofp i32 %j3.0 to double
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%add = fadd double %4, %conv
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%idxprom7 = sext i32 %j3.0 to i64
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%5 = mul nsw i64 %idxprom7, %1
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%arrayidx8 = getelementptr inbounds double, double* %vla, i64 %5
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%idxprom9 = sext i32 %i2.0 to i64
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%arrayidx10 = getelementptr inbounds double, double* %arrayidx8, i64 %idxprom9
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store double %add, double* %arrayidx10, align 8
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br label %for.inc
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for.inc:
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%inc = add nsw i32 %j3.0, 1
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br label %imperf_nest_2_loop_j
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for.end:
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%conv11 = sitofp i32 %i2.0 to double
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%6 = mul nsw i64 0, %1
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%arrayidx12 = getelementptr inbounds double, double* %vla, i64 %6
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%idxprom13 = sext i32 %i2.0 to i64
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%arrayidx14 = getelementptr inbounds double, double* %arrayidx12, i64 %idxprom13
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%7 = load double, double* %arrayidx14, align 8
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%add15 = fadd double %7, %conv11
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store double %add15, double* %arrayidx14, align 8
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br label %for.inc16
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for.inc16:
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%inc17 = add nsw i32 %i2.0, 1
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br label %imperf_nest_2_loop_i
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for.end18:
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ret void
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}
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; Test an imperfect 2-dim loop nest of the form:
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; for (i = 0; i < nx; ++i) {
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; for (j = 0; j < ny-nk; ++j)
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; y[i][j] = x[i] + j;
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; for (j = ny-nk; j < ny; ++j)
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; y[i][j] = x[i] - j;
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; }
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define void @imperf_nest_3(i32 signext %nx, i32 signext %ny, i32 signext %nk) {
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; CHECK-LABEL: IsPerfect=false, Depth=2, OutermostLoop: imperf_nest_3_loop_i, Loops: ( imperf_nest_3_loop_i imperf_nest_3_loop_j imperf_nest_3_loop_k )
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entry:
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%0 = zext i32 %nx to i64
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%1 = zext i32 %ny to i64
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%2 = mul nuw i64 %0, %1
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%vla = alloca double, i64 %2, align 8
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%3 = zext i32 %ny to i64
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%vla1 = alloca double, i64 %3, align 8
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br label %imperf_nest_3_loop_i
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imperf_nest_3_loop_i: ; preds = %for.inc25, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc26, %for.inc25 ]
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%cmp = icmp slt i32 %i.0, %nx
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br i1 %cmp, label %for.body, label %for.end27
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for.body: ; preds = %for.cond
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br label %imperf_nest_3_loop_j
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imperf_nest_3_loop_j: ; preds = %for.inc, %for.body
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%j.0 = phi i32 [ 0, %for.body ], [ %inc, %for.inc ]
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%sub = sub nsw i32 %ny, %nk
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%cmp3 = icmp slt i32 %j.0, %sub
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br i1 %cmp3, label %for.body4, label %for.end
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for.body4: ; preds = %imperf_nest_3_loop_j
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%idxprom = sext i32 %i.0 to i64
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%arrayidx = getelementptr inbounds double, double* %vla1, i64 %idxprom
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%4 = load double, double* %arrayidx, align 8
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%conv = sitofp i32 %j.0 to double
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%add = fadd double %4, %conv
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%idxprom5 = sext i32 %i.0 to i64
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%5 = mul nsw i64 %idxprom5, %1
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%arrayidx6 = getelementptr inbounds double, double* %vla, i64 %5
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%idxprom7 = sext i32 %j.0 to i64
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%arrayidx8 = getelementptr inbounds double, double* %arrayidx6, i64 %idxprom7
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store double %add, double* %arrayidx8, align 8
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br label %for.inc
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for.inc: ; preds = %for.body4
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%inc = add nsw i32 %j.0, 1
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br label %imperf_nest_3_loop_j
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for.end: ; preds = %imperf_nest_3_loop_j
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%sub9 = sub nsw i32 %ny, %nk
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br label %imperf_nest_3_loop_k
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imperf_nest_3_loop_k: ; preds = %for.inc22, %for.end
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%j.1 = phi i32 [ %sub9, %for.end ], [ %inc23, %for.inc22 ]
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%cmp11 = icmp slt i32 %j.1, %ny
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br i1 %cmp11, label %for.body13, label %for.end24
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for.body13: ; preds = %imperf_nest_3_loop_k
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%idxprom14 = sext i32 %i.0 to i64
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%arrayidx15 = getelementptr inbounds double, double* %vla1, i64 %idxprom14
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%6 = load double, double* %arrayidx15, align 8
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%conv16 = sitofp i32 %j.1 to double
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%sub17 = fsub double %6, %conv16
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%idxprom18 = sext i32 %i.0 to i64
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%7 = mul nsw i64 %idxprom18, %1
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%arrayidx19 = getelementptr inbounds double, double* %vla, i64 %7
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%idxprom20 = sext i32 %j.1 to i64
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%arrayidx21 = getelementptr inbounds double, double* %arrayidx19, i64 %idxprom20
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store double %sub17, double* %arrayidx21, align 8
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br label %for.inc22
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for.inc22: ; preds = %for.body13
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%inc23 = add nsw i32 %j.1, 1
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br label %imperf_nest_3_loop_k
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for.end24: ; preds = %imperf_nest_3_loop_k
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br label %for.inc25
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for.inc25: ; preds = %for.end24
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%inc26 = add nsw i32 %i.0, 1
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br label %imperf_nest_3_loop_i
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for.end27: ; preds = %for.cond
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ret void
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}
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; Test an imperfect loop nest of the form:
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; for (i = 0; i < nx; ++i) {
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; for (j = 0; j < ny-nk; ++j)
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; for (k = 0; k < nk; ++k)
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; y[i][j][k] = x[i+j] + k;
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; for (j = ny-nk; j < ny; ++j)
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; y[i][j][0] = x[i] - j;
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; }
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define void @imperf_nest_4(i32 signext %nx, i32 signext %ny, i32 signext %nk) {
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; CHECK-LABEL: IsPerfect=false, Depth=2, OutermostLoop: imperf_nest_4_loop_j, Loops: ( imperf_nest_4_loop_j imperf_nest_4_loop_k )
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; CHECK-LABEL: IsPerfect=false, Depth=3, OutermostLoop: imperf_nest_4_loop_i, Loops: ( imperf_nest_4_loop_i imperf_nest_4_loop_j imperf_nest_4_loop_j2 imperf_nest_4_loop_k )
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entry:
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%0 = zext i32 %nx to i64
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%1 = zext i32 %ny to i64
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%2 = zext i32 %nk to i64
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%3 = mul nuw i64 %0, %1
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%4 = mul nuw i64 %3, %2
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%vla = alloca double, i64 %4, align 8
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%5 = zext i32 %ny to i64
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%vla1 = alloca double, i64 %5, align 8
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%cmp5 = icmp slt i32 0, %nx
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br i1 %cmp5, label %imperf_nest_4_loop_i.lr.ph, label %for.end37
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imperf_nest_4_loop_i.lr.ph:
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br label %imperf_nest_4_loop_i
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imperf_nest_4_loop_i:
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%i.0 = phi i32 [ 0, %imperf_nest_4_loop_i.lr.ph ], [ %inc36, %for.inc35 ]
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%sub2 = sub nsw i32 %ny, %nk
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%cmp33 = icmp slt i32 0, %sub2
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br i1 %cmp33, label %imperf_nest_4_loop_j.lr.ph, label %for.end17
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imperf_nest_4_loop_j.lr.ph:
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br label %imperf_nest_4_loop_j
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imperf_nest_4_loop_j:
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%j.0 = phi i32 [ 0, %imperf_nest_4_loop_j.lr.ph ], [ %inc16, %for.inc15 ]
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%cmp61 = icmp slt i32 0, %nk
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br i1 %cmp61, label %imperf_nest_4_loop_k.lr.ph, label %for.end
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imperf_nest_4_loop_k.lr.ph:
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br label %imperf_nest_4_loop_k
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imperf_nest_4_loop_k:
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%k.0 = phi i32 [ 0, %imperf_nest_4_loop_k.lr.ph ], [ %inc, %for.inc ]
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%add = add nsw i32 %i.0, %j.0
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%idxprom = sext i32 %add to i64
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%arrayidx = getelementptr inbounds double, double* %vla1, i64 %idxprom
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%6 = load double, double* %arrayidx, align 8
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%conv = sitofp i32 %k.0 to double
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%add8 = fadd double %6, %conv
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%idxprom9 = sext i32 %i.0 to i64
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%7 = mul nuw i64 %1, %2
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%8 = mul nsw i64 %idxprom9, %7
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%arrayidx10 = getelementptr inbounds double, double* %vla, i64 %8
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%idxprom11 = sext i32 %j.0 to i64
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%9 = mul nsw i64 %idxprom11, %2
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%arrayidx12 = getelementptr inbounds double, double* %arrayidx10, i64 %9
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%idxprom13 = sext i32 %k.0 to i64
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%arrayidx14 = getelementptr inbounds double, double* %arrayidx12, i64 %idxprom13
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store double %add8, double* %arrayidx14, align 8
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br label %for.inc
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for.inc:
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%inc = add nsw i32 %k.0, 1
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%cmp6 = icmp slt i32 %inc, %nk
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br i1 %cmp6, label %imperf_nest_4_loop_k, label %for.cond5.for.end_crit_edge
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for.cond5.for.end_crit_edge:
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br label %for.end
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for.end:
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br label %for.inc15
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for.inc15:
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%inc16 = add nsw i32 %j.0, 1
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%sub = sub nsw i32 %ny, %nk
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%cmp3 = icmp slt i32 %inc16, %sub
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br i1 %cmp3, label %imperf_nest_4_loop_j, label %for.cond2.for.end17_crit_edge
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for.cond2.for.end17_crit_edge:
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br label %for.end17
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for.end17:
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%sub18 = sub nsw i32 %ny, %nk
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%cmp204 = icmp slt i32 %sub18, %ny
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br i1 %cmp204, label %imperf_nest_4_loop_j2.lr.ph, label %for.end34
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imperf_nest_4_loop_j2.lr.ph:
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br label %imperf_nest_4_loop_j2
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imperf_nest_4_loop_j2:
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%j.1 = phi i32 [ %sub18, %imperf_nest_4_loop_j2.lr.ph ], [ %inc33, %for.inc32 ]
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%idxprom23 = sext i32 %i.0 to i64
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%arrayidx24 = getelementptr inbounds double, double* %vla1, i64 %idxprom23
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%10 = load double, double* %arrayidx24, align 8
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%conv25 = sitofp i32 %j.1 to double
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%sub26 = fsub double %10, %conv25
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%idxprom27 = sext i32 %i.0 to i64
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%idxprom29 = sext i32 %j.1 to i64
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%11 = mul nsw i64 %idxprom29, %2
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%12 = mul nuw i64 %1, %2
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%13 = mul nsw i64 %idxprom27, %12
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%arrayidx28 = getelementptr inbounds double, double* %vla, i64 %13
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%arrayidx30 = getelementptr inbounds double, double* %arrayidx28, i64 %11
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%arrayidx31 = getelementptr inbounds double, double* %arrayidx30, i64 0
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store double %sub26, double* %arrayidx31, align 8
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br label %for.inc32
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for.inc32:
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%inc33 = add nsw i32 %j.1, 1
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%cmp20 = icmp slt i32 %inc33, %ny
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br i1 %cmp20, label %imperf_nest_4_loop_j2, label %for.cond19.for.end34_crit_edge
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for.cond19.for.end34_crit_edge:
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br label %for.end34
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for.end34:
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br label %for.inc35
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for.inc35:
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%inc36 = add nsw i32 %i.0, 1
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%cmp = icmp slt i32 %inc36, %nx
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br i1 %cmp, label %imperf_nest_4_loop_i, label %for.cond.for.end37_crit_edge
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for.cond.for.end37_crit_edge:
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br label %for.end37
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for.end37:
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ret void
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}
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; Test an imperfect loop nest of the form:
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; for (int i = 0; i < nx; ++i)
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; if (i > 5) {
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; for (int j = 0; j < ny; ++j)
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; y[j][i] = x[i][j] + j;
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; }
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define void @imperf_nest_5(i32** %y, i32** %x, i32 signext %nx, i32 signext %ny) {
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; CHECK-LABEL: IsPerfect=false, Depth=2, OutermostLoop: imperf_nest_5_loop_i, Loops: ( imperf_nest_5_loop_i imperf_nest_5_loop_j )
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entry:
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%cmp2 = icmp slt i32 0, %nx
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br i1 %cmp2, label %imperf_nest_5_loop_i.lr.ph, label %for.end13
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imperf_nest_5_loop_i.lr.ph:
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br label %imperf_nest_5_loop_i
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imperf_nest_5_loop_i:
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%i.0 = phi i32 [ 0, %imperf_nest_5_loop_i.lr.ph ], [ %inc12, %for.inc11 ]
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%cmp1 = icmp sgt i32 %i.0, 5
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br i1 %cmp1, label %if.then, label %if.end
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if.then:
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%cmp31 = icmp slt i32 0, %ny
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br i1 %cmp31, label %imperf_nest_5_loop_j.lr.ph, label %for.end
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imperf_nest_5_loop_j.lr.ph:
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br label %imperf_nest_5_loop_j
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imperf_nest_5_loop_j:
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%j.0 = phi i32 [ 0, %imperf_nest_5_loop_j.lr.ph ], [ %inc, %for.inc ]
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%idxprom = sext i32 %i.0 to i64
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%arrayidx = getelementptr inbounds i32*, i32** %x, i64 %idxprom
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|
%0 = load i32*, i32** %arrayidx, align 8
|
|
%idxprom5 = sext i32 %j.0 to i64
|
|
%arrayidx6 = getelementptr inbounds i32, i32* %0, i64 %idxprom5
|
|
%1 = load i32, i32* %arrayidx6, align 4
|
|
%add = add nsw i32 %1, %j.0
|
|
%idxprom7 = sext i32 %j.0 to i64
|
|
%arrayidx8 = getelementptr inbounds i32*, i32** %y, i64 %idxprom7
|
|
%2 = load i32*, i32** %arrayidx8, align 8
|
|
%idxprom9 = sext i32 %i.0 to i64
|
|
%arrayidx10 = getelementptr inbounds i32, i32* %2, i64 %idxprom9
|
|
store i32 %add, i32* %arrayidx10, align 4
|
|
br label %for.inc
|
|
|
|
for.inc:
|
|
%inc = add nsw i32 %j.0, 1
|
|
%cmp3 = icmp slt i32 %inc, %ny
|
|
br i1 %cmp3, label %imperf_nest_5_loop_j, label %for.cond2.for.end_crit_edge
|
|
|
|
for.cond2.for.end_crit_edge:
|
|
br label %for.end
|
|
|
|
for.end:
|
|
br label %if.end
|
|
|
|
if.end:
|
|
br label %for.inc11
|
|
|
|
for.inc11:
|
|
%inc12 = add nsw i32 %i.0, 1
|
|
%cmp = icmp slt i32 %inc12, %nx
|
|
br i1 %cmp, label %imperf_nest_5_loop_i, label %for.cond.for.end13_crit_edge
|
|
|
|
for.cond.for.end13_crit_edge:
|
|
br label %for.end13
|
|
|
|
for.end13:
|
|
ret void
|
|
}
|
|
|
|
; Test an imperfect loop nest of the form:
|
|
; for (int i = 0; i < nx; ++i)
|
|
; if (i > 5) { // user branch
|
|
; for (int j = 1; j <= 5; j+=2)
|
|
; y[j][i] = x[i][j] + j;
|
|
; }
|
|
|
|
define void @imperf_nest_6(i32** %y, i32** %x, i32 signext %nx, i32 signext %ny) {
|
|
; CHECK-LABEL: IsPerfect=false, Depth=2, OutermostLoop: imperf_nest_6_loop_i, Loops: ( imperf_nest_6_loop_i imperf_nest_6_loop_j )
|
|
entry:
|
|
%cmp2 = icmp slt i32 0, %nx
|
|
br i1 %cmp2, label %imperf_nest_6_loop_i.lr.ph, label %for.end13
|
|
|
|
imperf_nest_6_loop_i.lr.ph:
|
|
br label %imperf_nest_6_loop_i
|
|
|
|
imperf_nest_6_loop_i:
|
|
%i.0 = phi i32 [ 0, %imperf_nest_6_loop_i.lr.ph ], [ %inc12, %for.inc11 ]
|
|
%cmp1 = icmp sgt i32 %i.0, 5
|
|
br i1 %cmp1, label %imperf_nest_6_loop_j.lr.ph, label %if.end
|
|
|
|
imperf_nest_6_loop_j.lr.ph:
|
|
br label %imperf_nest_6_loop_j
|
|
|
|
imperf_nest_6_loop_j:
|
|
%j.0 = phi i32 [ 1, %imperf_nest_6_loop_j.lr.ph ], [ %inc, %for.inc ]
|
|
%idxprom = sext i32 %i.0 to i64
|
|
%arrayidx = getelementptr inbounds i32*, i32** %x, i64 %idxprom
|
|
%0 = load i32*, i32** %arrayidx, align 8
|
|
%idxprom5 = sext i32 %j.0 to i64
|
|
%arrayidx6 = getelementptr inbounds i32, i32* %0, i64 %idxprom5
|
|
%1 = load i32, i32* %arrayidx6, align 4
|
|
%add = add nsw i32 %1, %j.0
|
|
%idxprom7 = sext i32 %j.0 to i64
|
|
%arrayidx8 = getelementptr inbounds i32*, i32** %y, i64 %idxprom7
|
|
%2 = load i32*, i32** %arrayidx8, align 8
|
|
%idxprom9 = sext i32 %i.0 to i64
|
|
%arrayidx10 = getelementptr inbounds i32, i32* %2, i64 %idxprom9
|
|
store i32 %add, i32* %arrayidx10, align 4
|
|
br label %for.inc
|
|
|
|
for.inc:
|
|
%inc = add nsw i32 %j.0, 2
|
|
%cmp3 = icmp sle i32 %inc, 5
|
|
br i1 %cmp3, label %imperf_nest_6_loop_j, label %for.cond2.for.end_crit_edge
|
|
|
|
for.cond2.for.end_crit_edge:
|
|
br label %for.end
|
|
|
|
for.end:
|
|
br label %if.end
|
|
|
|
if.end:
|
|
br label %for.inc11
|
|
|
|
for.inc11:
|
|
%inc12 = add nsw i32 %i.0, 1
|
|
%cmp = icmp slt i32 %inc12, %nx
|
|
br i1 %cmp, label %imperf_nest_6_loop_i, label %for.cond.for.end13_crit_edge
|
|
|
|
for.cond.for.end13_crit_edge:
|
|
br label %for.end13
|
|
|
|
for.end13:
|
|
ret void
|
|
}
|