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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -S -passes=loop-unroll -unroll-allow-partial | FileCheck %s3 4; The phi which acts as input to func should not be undef. It should5; have its loop-carried value (the load in for.cond) replaced accordingly6; after unrolling the loop.7 8define i16 @full_unroll(ptr %A) {9; CHECK-LABEL: @full_unroll(10; CHECK-NEXT: entry:11; CHECK-NEXT: br label [[FOR_COND:%.*]]12; CHECK: for.cond:13; CHECK-NEXT: br label [[FOR_COND_CLEANUP3:%.*]]14; CHECK: for.cond.cleanup:15; CHECK-NEXT: [[DOTLCSSA10_LCSSA:%.*]] = phi i16 [ [[TMP2_2:%.*]], [[FOR_COND_CLEANUP3_2:%.*]] ]16; CHECK-NEXT: [[TMP3:%.*]] = call i16 @func(i16 [[DOTLCSSA10_LCSSA]])17; CHECK-NEXT: ret i16 018; CHECK: for.cond.cleanup3:19; CHECK-NEXT: br label [[FOR_COND_CLEANUP3_1:%.*]]20; CHECK: for.cond.cleanup3.1:21; CHECK-NEXT: [[PTR_2:%.*]] = getelementptr inbounds i16, ptr [[A:%.*]], i64 222; CHECK-NEXT: [[TMP2_2]] = load i16, ptr [[PTR_2]], align 223; CHECK-NEXT: br label [[FOR_COND_CLEANUP3_2]]24; CHECK: for.cond.cleanup3.2:25; CHECK-NEXT: br i1 false, label [[FOR_COND_CLEANUP3_3:%.*]], label [[FOR_COND_CLEANUP:%.*]]26; CHECK: for.cond.cleanup3.3:27; CHECK-NEXT: unreachable28;29entry:30 br label %for.cond31 32for.cond: ; preds = %for.cond.cleanup3, %entry33 %.lcssa10 = phi i16 [ 123, %entry ], [ %.lcssa, %for.cond.cleanup3 ]34 %i.0 = phi i64 [ 0, %entry ], [ %inc9, %for.cond.cleanup3 ]35 %ptr = getelementptr inbounds i16, ptr %A, i64 %i.036 %tmp2 = load i16, ptr %ptr37 %cmp = icmp ult i64 %i.0, 338 br i1 %cmp, label %for.cond.cleanup3, label %for.cond.cleanup39 40for.cond.cleanup: ; preds = %for.cond41 %.lcssa10.lcssa = phi i16 [ %.lcssa10, %for.cond ]42 %tmp3 = call i16 (i16) @func(i16 %.lcssa10.lcssa)43 ret i16 044 45for.cond.cleanup3: ; preds = %for.cond46 %.lcssa = phi i16 [ %tmp2, %for.cond ]47 %inc9 = add i64 %i.0, 148 br label %for.cond49}50 51define i16 @partial_unroll(ptr %A) {52; CHECK-LABEL: @partial_unroll(53; CHECK-NEXT: entry:54; CHECK-NEXT: br label [[FOR_COND:%.*]]55; CHECK: for.cond:56; CHECK-NEXT: [[I_0:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INC9_2:%.*]], [[FOR_COND_CLEANUP3_2:%.*]] ]57; CHECK-NEXT: br label [[FOR_COND_CLEANUP3:%.*]]58; CHECK: for.cond.cleanup:59; CHECK-NEXT: [[DOTLCSSA10_LCSSA:%.*]] = phi i16 [ [[TMP2_1:%.*]], [[FOR_COND_CLEANUP3_1:%.*]] ]60; CHECK-NEXT: [[TMP3:%.*]] = call i16 @func(i16 [[DOTLCSSA10_LCSSA]])61; CHECK-NEXT: ret i16 062; CHECK: for.cond.cleanup3:63; CHECK-NEXT: [[INC9:%.*]] = add nuw nsw i64 [[I_0]], 164; CHECK-NEXT: [[PTR_1:%.*]] = getelementptr inbounds i16, ptr [[A:%.*]], i64 [[INC9]]65; CHECK-NEXT: [[TMP2_1]] = load i16, ptr [[PTR_1]], align 266; CHECK-NEXT: br label [[FOR_COND_CLEANUP3_1]]67; CHECK: for.cond.cleanup3.1:68; CHECK-NEXT: [[INC9_1:%.*]] = add nuw nsw i64 [[I_0]], 269; CHECK-NEXT: [[CMP_2:%.*]] = icmp ult i64 [[INC9_1]], 20070; CHECK-NEXT: br i1 [[CMP_2]], label [[FOR_COND_CLEANUP3_2]], label [[FOR_COND_CLEANUP:%.*]]71; CHECK: for.cond.cleanup3.2:72; CHECK-NEXT: [[INC9_2]] = add nuw nsw i64 [[I_0]], 373; CHECK-NEXT: br label [[FOR_COND]]74;75entry:76 br label %for.cond77 78for.cond: ; preds = %for.cond.cleanup3, %entry79 %.lcssa10 = phi i16 [ 123, %entry ], [ %.lcssa, %for.cond.cleanup3 ]80 %i.0 = phi i64 [ 0, %entry ], [ %inc9, %for.cond.cleanup3 ]81 %ptr = getelementptr inbounds i16, ptr %A, i64 %i.082 %tmp2 = load i16, ptr %ptr83 %cmp = icmp ult i64 %i.0, 20084 br i1 %cmp, label %for.cond.cleanup3, label %for.cond.cleanup85 86for.cond.cleanup: ; preds = %for.cond87 %.lcssa10.lcssa = phi i16 [ %.lcssa10, %for.cond ]88 %tmp3 = call i16 (i16) @func(i16 %.lcssa10.lcssa)89 ret i16 090 91for.cond.cleanup3: ; preds = %for.cond92 %.lcssa = phi i16 [ %tmp2, %for.cond ]93 %inc9 = add i64 %i.0, 194 br label %for.cond95}96 97declare i16 @func(i16)98 99