derek.holloway
7502bf64a4
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52 lines
2.4 KiB
LLVM
52 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -loop-reduce -S < %s | FileCheck %s
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;
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; PR11571: handle a postinc user outside of for.body7 that requires
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; recursive expansion of a quadratic recurrence within for.body7. LSR
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; needs to forget that for.body7 is a postinc loop during expansion.
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
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target triple = "i386-unknown-freebsd10.0"
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@b = external global [121 x i32]
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define void @vb() nounwind {
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; CHECK-LABEL: define void @vb
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; CHECK-SAME: () #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: for.cond.preheader:
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; CHECK-NEXT: br label [[FOR_BODY7:%.*]]
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; CHECK: for.body7:
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; CHECK-NEXT: [[LSR_IV1:%.*]] = phi ptr [ [[SCEVGEP:%.*]], [[FOR_BODY7]] ], [ getelementptr inbounds nuw (i8, ptr @b, i32 4), [[FOR_COND_PREHEADER:%.*]] ]
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi i32 [ [[LSR_IV_NEXT:%.*]], [[FOR_BODY7]] ], [ 8, [[FOR_COND_PREHEADER]] ]
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; CHECK-NEXT: [[INDVARS_IV77:%.*]] = phi i32 [ [[INDVARS_IV_NEXT78:%.*]], [[FOR_BODY7]] ], [ 1, [[FOR_COND_PREHEADER]] ]
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; CHECK-NEXT: [[INDVARS_IV_NEXT78]] = add i32 [[INDVARS_IV77]], 1
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; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i32 [[LSR_IV]], 4
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; CHECK-NEXT: [[SCEVGEP]] = getelementptr i8, ptr [[LSR_IV1]], i32 [[LSR_IV]]
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; CHECK-NEXT: br i1 true, label [[FOR_BODY43_PREHEADER:%.*]], label [[FOR_BODY7]]
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; CHECK: for.body43.preheader:
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; CHECK-NEXT: br label [[FOR_BODY43:%.*]]
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; CHECK: for.body43:
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; CHECK-NEXT: [[LSR_IV2:%.*]] = phi ptr [ [[LSR_IV1]], [[FOR_BODY43_PREHEADER]] ], [ [[SCEVGEP3:%.*]], [[FOR_BODY43]] ]
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; CHECK-NEXT: [[T2:%.*]] = load i32, ptr [[LSR_IV2]], align 4
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; CHECK-NEXT: [[SCEVGEP3]] = getelementptr i8, ptr [[LSR_IV2]], i32 4
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; CHECK-NEXT: br label [[FOR_BODY43]]
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;
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for.cond.preheader:
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br label %for.body7
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for.body7:
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%indvars.iv77 = phi i32 [ %indvars.iv.next78, %for.body7 ], [ 1, %for.cond.preheader ]
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%bf.072 = phi i32 [ %t1, %for.body7 ], [ 0, %for.cond.preheader ]
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%t1 = add i32 %bf.072, %indvars.iv77
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%indvars.iv.next78 = add i32 %indvars.iv77, 1
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br i1 true, label %for.body43, label %for.body7
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for.body43:
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%bf.459 = phi i32 [ %inc44, %for.body43 ], [ %t1, %for.body7 ]
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%inc44 = add nsw i32 %bf.459, 1
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%arrayidx45 = getelementptr inbounds [121 x i32], ptr @b, i32 0, i32 %bf.459
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%t2 = load i32, ptr %arrayidx45, align 4
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br label %for.body43
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}
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