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cc0c445bfc
Patch by Artem Radzikhovskyy! Allow delinearization of fixed sized arrays if we can prove that the GEP indices do not overflow the array dimensions. The checks applied are similar to the ones that are used for delinearization of parametric size arrays. Make sure that the GEP indices are non-negative and that they are smaller than the range of that dimension. Changes Summary: - Updated the LIT tests with more exact values, as we are able to delinearize and apply more exact tests - profitability.ll - now able to delinearize in all cases, no need to use -da-disable-delinearization-checks flag and run the test twice - loop-interchange-optimization-remarks.ll - in one of the cases we are able to delinearize without using -da-disable-delinearization-checks - SimpleSIVNoValidityCheckFixedSize.ll - removed unnecessary "-da-disable-delinearization-checks" flag. Now can get the exact answer without it. - SimpleSIVNoValidityCheckFixedSize.ll and PreliminaryNoValidityCheckFixedSize.ll - made negative tests more explicit, in order to demonstrate the need for "-da-disable-delinearization-checks" flag Differential Revision: https://reviews.llvm.org/D101486
55 lines
1.7 KiB
LLVM
55 lines
1.7 KiB
LLVM
; RUN: opt < %s -disable-output "-passes=print<da>" -aa-pipeline=basic-aa 2>&1 \
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; RUN: | FileCheck %s
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; RUN: opt < %s -analyze -enable-new-pm=0 -basic-aa -da | FileCheck %s
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; Test for a bug, which caused an assert when an invalid
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; SCEVAddRecExpr is created in addToCoefficient.
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; float foo (float g, float* rr[40]) {
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; float res= 0.0f;
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; for (int i = 0; i < 40; i += 5) {
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; for (int j = 0; j < 40; j += 5) {
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; float add = rr[j][j] + rr[i][j];
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; res = add > g? add : res;
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; }
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; }
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; return res;
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; }
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; CHECK-LABEL: foo
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; CHECK: da analyze - consistent input [S 0]!
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; CHECK: da analyze - input [* 0|<]!
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; CHECK: da analyze - none!
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define float @foo(float %g, [40 x float]* %rr) nounwind {
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entry:
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br label %for.cond1.preheader
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for.cond1.preheader:
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%i.04 = phi i32 [ 0, %entry ], [ %add10, %for.inc9 ]
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%res.03 = phi float [ 0.000000e+00, %entry ], [ %add.res.1, %for.inc9 ]
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br label %for.body3
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for.body3:
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%j.02 = phi i32 [ 0, %for.cond1.preheader ], [ %add8, %for.body3 ]
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%res.11 = phi float [ %res.03, %for.cond1.preheader ], [ %add.res.1, %for.body3 ]
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%arrayidx4 = getelementptr inbounds [40 x float], [40 x float]* %rr, i32 %j.02, i32 %j.02
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%0 = load float, float* %arrayidx4, align 4
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%arrayidx6 = getelementptr inbounds [40 x float], [40 x float]* %rr, i32 %i.04, i32 %j.02
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%1 = load float, float* %arrayidx6, align 4
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%add = fadd float %0, %1
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%cmp7 = fcmp ogt float %add, %g
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%add.res.1 = select i1 %cmp7, float %add, float %res.11
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%add8 = add nsw i32 %j.02, 5
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%cmp2 = icmp slt i32 %add8, 40
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br i1 %cmp2, label %for.body3, label %for.inc9
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for.inc9:
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%add10 = add nsw i32 %i.04, 5
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%cmp = icmp slt i32 %add10, 40
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br i1 %cmp, label %for.cond1.preheader, label %for.end11
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for.end11:
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ret float %add.res.1
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}
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