derek.holloway
7502bf64a4
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59 lines
2.5 KiB
LLVM
59 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt < %s -loop-reduce -gvn -S | FileCheck %s
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target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
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; LoopStrengthReduce should reuse %mul as the stride.
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define void @_Z3fooPfll(ptr nocapture readonly %input, i64 %n, i64 %s) {
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; CHECK-LABEL: define void @_Z3fooPfll
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; CHECK-SAME: (ptr readonly captures(none) [[INPUT:%.*]], i64 [[N:%.*]], i64 [[S:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MUL:%.*]] = shl i64 [[S]], 2
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; CHECK-NEXT: tail call void @_Z3bazl(i64 [[MUL]])
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; CHECK-NEXT: [[CMP_5:%.*]] = icmp sgt i64 [[N]], 0
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; CHECK-NEXT: br i1 [[CMP_5]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
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; CHECK: for.body.preheader:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.cond.cleanup.loopexit:
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; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: ret void
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; CHECK: for.body:
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; CHECK-NEXT: [[LSR_IV:%.*]] = phi ptr [ [[SCEVGEP:%.*]], [[FOR_BODY]] ], [ [[INPUT]], [[FOR_BODY_PREHEADER]] ]
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; CHECK-NEXT: [[I_06:%.*]] = phi i64 [ [[ADD:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = load float, ptr [[LSR_IV]], align 4
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; CHECK-NEXT: tail call void @_Z3barf(float [[TMP0]])
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; CHECK-NEXT: [[ADD]] = add i64 [[I_06]], [[S]]
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; CHECK-NEXT: [[SCEVGEP]] = getelementptr i8, ptr [[LSR_IV]], i64 [[MUL]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i64 [[ADD]], [[N]]
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
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;
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entry:
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%mul = shl nsw i64 %s, 2
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tail call void @_Z3bazl(i64 %mul) #2
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%cmp.5 = icmp sgt i64 %n, 0
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br i1 %cmp.5, label %for.body.preheader, label %for.cond.cleanup
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.cond.cleanup.loopexit: ; preds = %for.body
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br label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry
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ret void
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for.body: ; preds = %for.body.preheader, %for.body
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%i.06 = phi i64 [ %add, %for.body ], [ 0, %for.body.preheader ]
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%arrayidx = getelementptr inbounds float, ptr %input, i64 %i.06
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%0 = load float, ptr %arrayidx, align 4
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tail call void @_Z3barf(float %0) #2
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%add = add nsw i64 %i.06, %s
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%cmp = icmp slt i64 %add, %n
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br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit
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}
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declare void @_Z3bazl(i64)
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declare void @_Z3barf(float)
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