4fe342cb75
Today Polly generates induction variable in this way: polly.indvar = phi 0, polly.indvar.next ... polly.indvar.next = polly.indvar + stide polly.loop_cond = predicate polly.indvar, (UB - stride) Instead of: polly.indvar = phi 0, polly.indvar.next ... polly.indvar.next = polly.indvar + stide polly.loop_cond = predicate polly.indvar.next, UB The way Polly generate induction variable cause some problem in the indvar simplify pass. This patch make polly generate the later form, by assuming the induction variable never overflow Differential Revision: https://reviews.llvm.org/D33089 llvm-svn: 302866
65 lines
2.6 KiB
LLVM
65 lines
2.6 KiB
LLVM
; RUN: opt %loadPolly -polly-codegen -polly-ast-detect-parallel -S < %s | FileCheck %s
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;
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; Check that we mark multiple parallel loops correctly including the memory instructions.
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;
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; CHECK-DAG: %polly.loop_cond[[COuter:[0-9]*]] = icmp sle i64 %polly.indvar_next{{[0-9]*}}, 1023
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; CHECK-DAG: br i1 %polly.loop_cond[[COuter]], label %polly.loop_header{{[0-9]*}}, label %polly.loop_exit{{[0-9]*}}, !llvm.loop ![[IDOuter:[0-9]*]]
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;
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; CHECK-DAG: %polly.loop_cond[[CInner:[0-9]*]] = icmp sle i64 %polly.indvar_next{{[0-9]*}}, 511
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; CHECK-DAG: br i1 %polly.loop_cond[[CInner]], label %polly.loop_header{{[0-9]*}}, label %polly.loop_exit{{[0-9]*}}, !llvm.loop ![[IDInner:[0-9]*]]
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;
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; CHECK-DAG: store i32 %{{[a-z_0-9]*}}, i32* %{{[a-z_0-9]*}}, {{[ ._!,a-zA-Z0-9]*}}, !llvm.mem.parallel_loop_access !4
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;
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; CHECK-DAG: ![[IDOuter]] = distinct !{![[IDOuter]]}
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; CHECK-DAG: ![[IDInner]] = distinct !{![[IDInner]]}
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; CHECK-DAG: !4 = !{![[IDOuter]], ![[IDInner]]}
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;
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; void jd(int *A) {
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; for (int i = 0; i < 1024; i++)
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; for (int j = 0; j < 512; j++)
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; A[i * 512 + j] = i + j;
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; }
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @jd(i32* %A) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc5, %entry
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%indvars.iv3 = phi i64 [ %indvars.iv.next4, %for.inc5 ], [ 0, %entry ]
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%exitcond6 = icmp ne i64 %indvars.iv3, 1024
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br i1 %exitcond6, label %for.body, label %for.end7
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for.body: ; preds = %for.cond
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br label %for.cond1
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for.cond1: ; preds = %for.inc, %for.body
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %for.body ]
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%exitcond = icmp ne i64 %indvars.iv, 512
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br i1 %exitcond, label %for.body3, label %for.end
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for.body3: ; preds = %for.cond1
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%tmp = add nsw i64 %indvars.iv3, %indvars.iv
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%tmp7 = shl nsw i64 %indvars.iv3, 9
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%tmp8 = add nsw i64 %tmp7, %indvars.iv
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %tmp8
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%tmp9 = trunc i64 %tmp to i32
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store i32 %tmp9, i32* %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body3
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %for.cond1
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for.end: ; preds = %for.cond1
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br label %for.inc5
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for.inc5: ; preds = %for.end
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%indvars.iv.next4 = add nuw nsw i64 %indvars.iv3, 1
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br label %for.cond
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for.end7: ; preds = %for.cond
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ret void
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}
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