1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2 ; RUN: opt -S -gvn < %s | FileCheck %s 3 4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 target triple = "x86_64-unknown-linux-gnu" 6 7 ; The load in the loop can not bypass the data from the previous loop. The store above it in the loop aliases. 8 define void @foo() { 9 ; CHECK-LABEL: @foo( 10 ; CHECK-NEXT: entry: 11 ; CHECK-NEXT: [[A:%.*]] = alloca [3 x i32], align 4 12 ; CHECK-NEXT: br label [[FOR_BODY:%.*]] 13 ; CHECK: for.cond.cleanup: 14 ; CHECK-NEXT: ret void 15 ; CHECK: for.body: 16 ; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 1, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 17 ; CHECK-NEXT: [[P_017:%.*]] = phi i32* [ undef, [[ENTRY]] ], [ [[ARRAYIDX3:%.*]], [[FOR_BODY]] ] 18 ; CHECK-NEXT: [[TMP0:%.*]] = add nsw i64 [[INDVARS_IV]], -1 19 ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[A]], i64 0, i64 [[TMP0]] 20 ; CHECK-NEXT: store i32 50, i32* [[ARRAYIDX]], align 4 21 ; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[INDVARS_IV]], 1 22 ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[P_017]], align 4 23 ; CHECK-NEXT: [[TMP3:%.*]] = trunc i64 [[TMP1]] to i32 24 ; CHECK-NEXT: [[ADD1:%.*]] = add nsw i32 [[TMP2]], [[TMP3]] 25 ; CHECK-NEXT: [[ARRAYIDX3]] = getelementptr inbounds [3 x i32], [3 x i32]* [[A]], i64 0, i64 [[INDVARS_IV]] 26 ; CHECK-NEXT: store i32 60, i32* [[ARRAYIDX3]], align 4 27 ; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 28 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], 3 29 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP:%.*]] 30 ; 31 entry: 32 %a = alloca [3 x i32], align 4 33 br label %for.body 34 35 for.cond.cleanup: ; preds = %for.body 36 ret void 37 38 for.body: ; preds = %for.body, %entry 39 %indvars.iv = phi i64 [ 1, %entry ], [ %indvars.iv.next, %for.body ] 40 %p.017 = phi i32* [ undef, %entry ], [ %arrayidx3, %for.body ] 41 %0 = add nsw i64 %indvars.iv, -1 42 %arrayidx = getelementptr inbounds [3 x i32], [3 x i32]* %a, i64 0, i64 %0 43 store i32 50, i32* %arrayidx, align 4 44 %1 = shl i64 %indvars.iv, 1 45 %2 = load i32, i32* %p.017, align 4 46 %3 = trunc i64 %1 to i32 47 %add1 = add nsw i32 %2, %3 48 %arrayidx3 = getelementptr inbounds [3 x i32], [3 x i32]* %a, i64 0, i64 %indvars.iv 49 store i32 60, i32* %arrayidx3, align 4 50 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 51 %exitcond = icmp ne i64 %indvars.iv.next, 3 52 br i1 %exitcond, label %for.body, label %for.cond.cleanup 53 } 54
