derek.holloway
7502bf64a4
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99 lines
4.0 KiB
LLVM
99 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -S -passes=loop-unroll -unroll-allow-partial | FileCheck %s
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; The phi which acts as input to func should not be undef. It should
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; have its loop-carried value (the load in for.cond) replaced accordingly
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; after unrolling the loop.
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define i16 @full_unroll(ptr %A) {
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; CHECK-LABEL: @full_unroll(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: br label [[FOR_COND_CLEANUP3:%.*]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: [[DOTLCSSA10_LCSSA:%.*]] = phi i16 [ [[TMP2_2:%.*]], [[FOR_COND_CLEANUP3_2:%.*]] ]
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; CHECK-NEXT: [[TMP3:%.*]] = call i16 @func(i16 [[DOTLCSSA10_LCSSA]])
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; CHECK-NEXT: ret i16 0
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; CHECK: for.cond.cleanup3:
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; CHECK-NEXT: br label [[FOR_COND_CLEANUP3_1:%.*]]
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; CHECK: for.cond.cleanup3.1:
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; CHECK-NEXT: [[PTR_2:%.*]] = getelementptr inbounds i16, ptr [[A:%.*]], i64 2
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; CHECK-NEXT: [[TMP2_2]] = load i16, ptr [[PTR_2]], align 2
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; CHECK-NEXT: br label [[FOR_COND_CLEANUP3_2]]
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; CHECK: for.cond.cleanup3.2:
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; CHECK-NEXT: br i1 false, label [[FOR_COND_CLEANUP3_3:%.*]], label [[FOR_COND_CLEANUP:%.*]]
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; CHECK: for.cond.cleanup3.3:
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; CHECK-NEXT: unreachable
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.cond.cleanup3, %entry
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%.lcssa10 = phi i16 [ 123, %entry ], [ %.lcssa, %for.cond.cleanup3 ]
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%i.0 = phi i64 [ 0, %entry ], [ %inc9, %for.cond.cleanup3 ]
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%ptr = getelementptr inbounds i16, ptr %A, i64 %i.0
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%tmp2 = load i16, ptr %ptr
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%cmp = icmp ult i64 %i.0, 3
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br i1 %cmp, label %for.cond.cleanup3, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond
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%.lcssa10.lcssa = phi i16 [ %.lcssa10, %for.cond ]
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%tmp3 = call i16 (i16) @func(i16 %.lcssa10.lcssa)
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ret i16 0
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for.cond.cleanup3: ; preds = %for.cond
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%.lcssa = phi i16 [ %tmp2, %for.cond ]
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%inc9 = add i64 %i.0, 1
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br label %for.cond
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}
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define i16 @partial_unroll(ptr %A) {
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; CHECK-LABEL: @partial_unroll(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_COND:%.*]]
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; CHECK: for.cond:
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; CHECK-NEXT: [[I_0:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INC9_2:%.*]], [[FOR_COND_CLEANUP3_2:%.*]] ]
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; CHECK-NEXT: br label [[FOR_COND_CLEANUP3:%.*]]
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; CHECK: for.cond.cleanup:
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; CHECK-NEXT: [[DOTLCSSA10_LCSSA:%.*]] = phi i16 [ [[TMP2_1:%.*]], [[FOR_COND_CLEANUP3_1:%.*]] ]
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; CHECK-NEXT: [[TMP3:%.*]] = call i16 @func(i16 [[DOTLCSSA10_LCSSA]])
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; CHECK-NEXT: ret i16 0
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; CHECK: for.cond.cleanup3:
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; CHECK-NEXT: [[INC9:%.*]] = add nuw nsw i64 [[I_0]], 1
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; CHECK-NEXT: [[PTR_1:%.*]] = getelementptr inbounds i16, ptr [[A:%.*]], i64 [[INC9]]
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; CHECK-NEXT: [[TMP2_1]] = load i16, ptr [[PTR_1]], align 2
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; CHECK-NEXT: br label [[FOR_COND_CLEANUP3_1]]
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; CHECK: for.cond.cleanup3.1:
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; CHECK-NEXT: [[INC9_1:%.*]] = add nuw nsw i64 [[I_0]], 2
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; CHECK-NEXT: [[CMP_2:%.*]] = icmp samesign ult i64 [[INC9_1]], 200
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; CHECK-NEXT: br i1 [[CMP_2]], label [[FOR_COND_CLEANUP3_2]], label [[FOR_COND_CLEANUP:%.*]]
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; CHECK: for.cond.cleanup3.2:
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; CHECK-NEXT: [[INC9_2]] = add nuw nsw i64 [[I_0]], 3
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; CHECK-NEXT: br label [[FOR_COND]]
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.cond.cleanup3, %entry
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%.lcssa10 = phi i16 [ 123, %entry ], [ %.lcssa, %for.cond.cleanup3 ]
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%i.0 = phi i64 [ 0, %entry ], [ %inc9, %for.cond.cleanup3 ]
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%ptr = getelementptr inbounds i16, ptr %A, i64 %i.0
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%tmp2 = load i16, ptr %ptr
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%cmp = icmp ult i64 %i.0, 200
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br i1 %cmp, label %for.cond.cleanup3, label %for.cond.cleanup
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for.cond.cleanup: ; preds = %for.cond
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%.lcssa10.lcssa = phi i16 [ %.lcssa10, %for.cond ]
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%tmp3 = call i16 (i16) @func(i16 %.lcssa10.lcssa)
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ret i16 0
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for.cond.cleanup3: ; preds = %for.cond
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%.lcssa = phi i16 [ %tmp2, %for.cond ]
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%inc9 = add i64 %i.0, 1
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br label %for.cond
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}
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declare i16 @func(i16)
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