opt.ll
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; RUN: opt < %s -bounds-checking -S | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
; CHECK-LABEL: @sumSize
define dso_local i32 @sumSize(i32 %n) {
entry:
%foo = alloca [1000 x i32], align 16
%0 = bitcast [1000 x i32]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0)
%arraydecay = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.body.i
for.body.i: ; preds = %for.body.i, %entry
%indvars.iv.i = phi i64 [ 0, %entry ], [ %indvars.iv.next.i, %for.body.i ]
%sum.07.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ]
%arrayidx.i = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 %indvars.iv.i
; CHECK-NOT: trap
%1 = load i32, i32* %arrayidx.i, align 4
%add.i = add nsw i32 %1, %sum.07.i
%indvars.iv.next.i = add nuw nsw i64 %indvars.iv.i, 1
%exitcond.i = icmp eq i64 %indvars.iv.next.i, 1000
br i1 %exitcond.i, label %accumulate.exit, label %for.body.i
accumulate.exit: ; preds = %for.body.i
call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0)
ret i32 %add.i
}
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare dso_local void @fill(i32*, i32)
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
; CHECK-LABEL: @sumSizePlusOne
define dso_local i32 @sumSizePlusOne(i32 %n) {
entry:
%foo = alloca [1000 x i32], align 16
%0 = bitcast [1000 x i32]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0)
%arraydecay = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.body.i
for.body.i: ; preds = %for.body.i, %entry
%indvars.iv.i = phi i64 [ 0, %entry ], [ %indvars.iv.next.i, %for.body.i ]
%sum.01.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ]
%arrayidx.i = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 %indvars.iv.i
; CHECK: mul i64 {{.*}}, 4
; CHECK: sub i64 4000, %
; CHECK-NEXT: icmp ult i64 {{.*}}, 4
; CHECK-NEXT: or i1
; CHECK: trap
%1 = load i32, i32* %arrayidx.i, align 4
%add.i = add nsw i32 %1, %sum.01.i
%indvars.iv.next.i = add nuw nsw i64 %indvars.iv.i, 1
%exitcond.i = icmp eq i64 %indvars.iv.next.i, 1001
br i1 %exitcond.i, label %accumulate.exit, label %for.body.i
accumulate.exit: ; preds = %for.body.i
call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0)
ret i32 %add.i
}
; CHECK-LABEL: @sumLarger
define dso_local i32 @sumLarger(i32 %n) {
entry:
%foo = alloca [1000 x i32], align 16
%0 = bitcast [1000 x i32]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0)
%arraydecay = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.body.i
for.body.i: ; preds = %for.body.i, %entry
%indvars.iv.i = phi i64 [ 0, %entry ], [ %indvars.iv.next.i, %for.body.i ]
%sum.07.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ]
%arrayidx.i = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 %indvars.iv.i
; CHECK: mul i64 {{.*}}, 4
; CHECK: sub i64 4000, %
; CHECK-NEXT: icmp ult i64 4000, %
; CHECK-NEXT: icmp ult i64 {{.*}}, 4
; CHECK-NEXT: or i1
; CHECK: trap
%1 = load i32, i32* %arrayidx.i, align 4
%add.i = add nsw i32 %1, %sum.07.i
%indvars.iv.next.i = add nuw nsw i64 %indvars.iv.i, 1
%exitcond.i = icmp eq i64 %indvars.iv.next.i, 2000
br i1 %exitcond.i, label %accumulate.exit, label %for.body.i
accumulate.exit: ; preds = %for.body.i
call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0)
ret i32 %add.i
}
; CHECK-LABEL: @sumUnknown
define dso_local i32 @sumUnknown(i32 %n) {
entry:
%foo = alloca [1000 x i32], align 16
%0 = bitcast [1000 x i32]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0)
%arraydecay = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
%cmp6.i = icmp eq i32 %n, 0
br i1 %cmp6.i, label %accumulate.exit, label %for.body.preheader.i
for.body.preheader.i: ; preds = %entry
%wide.trip.count.i = zext i32 %n to i64
br label %for.body.i
for.body.i: ; preds = %for.body.i, %for.body.preheader.i
%indvars.iv.i = phi i64 [ 0, %for.body.preheader.i ], [ %indvars.iv.next.i, %for.body.i ]
%sum.07.i = phi i32 [ 0, %for.body.preheader.i ], [ %add.i, %for.body.i ]
%arrayidx.i = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 %indvars.iv.i
; CHECK: mul i64 {{.*}}, 4
; CHECK: sub i64 4000, %
; CHECK-NEXT: icmp ult i64 4000, %
; CHECK-NEXT: icmp ult i64 {{.*}}, 4
; CHECK-NEXT: or i1
; CHECK: trap
%1 = load i32, i32* %arrayidx.i, align 4
%add.i = add nsw i32 %1, %sum.07.i
%indvars.iv.next.i = add nuw nsw i64 %indvars.iv.i, 1
%exitcond.i = icmp eq i64 %indvars.iv.next.i, %wide.trip.count.i
br i1 %exitcond.i, label %accumulate.exit, label %for.body.i
accumulate.exit: ; preds = %for.body.i, %entry
%sum.0.lcssa.i = phi i32 [ 0, %entry ], [ %add.i, %for.body.i ]
call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0)
ret i32 %sum.0.lcssa.i
}
; CHECK-LABEL: @twoDimSize
define dso_local i32 @twoDimSize(i32 %n) {
entry:
%foo = alloca [2 x [2 x i32]], align 16
%0 = bitcast [2 x [2 x i32]]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0)
%arraydecay = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond.cleanup3, %entry
%indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.cond.cleanup3 ]
%sum.021 = phi i32 [ 0, %entry ], [ %add, %for.cond.cleanup3 ]
br label %for.body4
for.cond.cleanup: ; preds = %for.cond.cleanup3
call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0)
ret i32 %add
for.cond.cleanup3: ; preds = %for.body4
%indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
%exitcond25 = icmp eq i64 %indvars.iv.next24, 2
br i1 %exitcond25, label %for.cond.cleanup, label %for.cond1.preheader
for.body4: ; preds = %for.body4, %for.cond1.preheader
%indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body4 ]
%sum.119 = phi i32 [ %sum.021, %for.cond1.preheader ], [ %add, %for.body4 ]
%arrayidx7 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 %indvars.iv23, i64 %indvars.iv
; CHECK-NOT: trap
%1 = load i32, i32* %arrayidx7, align 4
%add = add nsw i32 %1, %sum.119
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 2
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4
}
; CHECK-LABEL: @twoDimLarger1
define dso_local i32 @twoDimLarger1(i32 %n) {
entry:
%foo = alloca [2 x [2 x i32]], align 16
%0 = bitcast [2 x [2 x i32]]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0)
%arraydecay = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond.cleanup3, %entry
%indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.cond.cleanup3 ]
%sum.021 = phi i32 [ 0, %entry ], [ %add, %for.cond.cleanup3 ]
br label %for.body4
for.cond.cleanup: ; preds = %for.cond.cleanup3
call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0)
ret i32 %add
for.cond.cleanup3: ; preds = %for.body4
%indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
%exitcond25 = icmp eq i64 %indvars.iv.next24, 3
br i1 %exitcond25, label %for.cond.cleanup, label %for.cond1.preheader
for.body4: ; preds = %for.body4, %for.cond1.preheader
%indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body4 ]
%sum.119 = phi i32 [ %sum.021, %for.cond1.preheader ], [ %add, %for.body4 ]
%arrayidx7 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 %indvars.iv23, i64 %indvars.iv
; CHECK: mul i64 {{.*}}, 8
; CHECK: mul i64 {{.*}}, 4
; CHECK: add i64
; CHECK: sub i64 16, %
; CHECK-NEXT: icmp ult i64 16, %
; CHECK-NEXT: icmp ult i64 {{.*}}, 4
; CHECK-NEXT: or i1
; CHECK: trap
%1 = load i32, i32* %arrayidx7, align 4
%add = add nsw i32 %1, %sum.119
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 2
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4
}
; CHECK-LABEL: @twoDimLarger2
define dso_local i32 @twoDimLarger2(i32 %n) {
entry:
%foo = alloca [2 x [2 x i32]], align 16
%0 = bitcast [2 x [2 x i32]]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0)
%arraydecay = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond.cleanup3, %entry
%indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.cond.cleanup3 ]
%sum.021 = phi i32 [ 0, %entry ], [ %add, %for.cond.cleanup3 ]
br label %for.body4
for.cond.cleanup: ; preds = %for.cond.cleanup3
call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0)
ret i32 %add
for.cond.cleanup3: ; preds = %for.body4
%indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
%exitcond25 = icmp eq i64 %indvars.iv.next24, 2
br i1 %exitcond25, label %for.cond.cleanup, label %for.cond1.preheader
for.body4: ; preds = %for.body4, %for.cond1.preheader
%indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body4 ]
%sum.119 = phi i32 [ %sum.021, %for.cond1.preheader ], [ %add, %for.body4 ]
%arrayidx7 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 %indvars.iv23, i64 %indvars.iv
; CHECK: mul i64 {{.*}}, 8
; CHECK: mul i64 {{.*}}, 4
; CHECK: add i64
; CHECK: sub i64 16, %
; CHECK-NEXT: icmp ult i64 {{.*}}, 4
; CHECK-NEXT: or i1
; CHECK: trap
%1 = load i32, i32* %arrayidx7, align 4
%add = add nsw i32 %1, %sum.119
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 3
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4
}
; CHECK-LABEL: @twoDimUnknown
define dso_local i32 @twoDimUnknown(i32 %n) {
entry:
%foo = alloca [2 x [2 x i32]], align 16
%0 = bitcast [2 x [2 x i32]]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0)
%arraydecay = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
%cmp24 = icmp eq i32 %n, 0
br i1 %cmp24, label %for.cond.cleanup, label %for.cond1.preheader.lr.ph
for.cond1.preheader.lr.ph: ; preds = %entry
%wide.trip.count = zext i32 %n to i64
%wide.trip.count.le = zext i32 %n to i64
br label %for.body4.lr.ph
for.body4.lr.ph: ; preds = %for.cond1.preheader.lr.ph, %for.cond.cleanup3
%indvars.iv28 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next29, %for.cond.cleanup3 ]
%sum.025 = phi i32 [ 0, %for.cond1.preheader.lr.ph ], [ %add, %for.cond.cleanup3 ]
br label %for.body4
for.cond.cleanup: ; preds = %for.cond.cleanup3, %entry
%sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.cond.cleanup3 ]
call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0)
ret i32 %sum.0.lcssa
for.cond.cleanup3: ; preds = %for.body4
%indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1
%exitcond31 = icmp eq i64 %indvars.iv.next29, %wide.trip.count.le
br i1 %exitcond31, label %for.cond.cleanup, label %for.body4.lr.ph
for.body4: ; preds = %for.body4, %for.body4.lr.ph
%indvars.iv = phi i64 [ 0, %for.body4.lr.ph ], [ %indvars.iv.next, %for.body4 ]
%sum.122 = phi i32 [ %sum.025, %for.body4.lr.ph ], [ %add, %for.body4 ]
%arrayidx7 = getelementptr inbounds [2 x [2 x i32]], [2 x [2 x i32]]* %foo, i64 0, i64 %indvars.iv28, i64 %indvars.iv
; CHECK: mul i64 {{.*}}, 8
; CHECK: mul i64 {{.*}}, 4
; CHECK: add i64
; CHECK: sub i64 16, %
; CHECK-NEXT: icmp ult i64 16, %
; CHECK-NEXT: icmp ult i64 {{.*}}, 4
; CHECK-NEXT: or i1
; CHECK: trap
%1 = load i32, i32* %arrayidx7, align 4
%add = add nsw i32 %1, %sum.122
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4
}
; CHECK-LABEL: @countDownGood
define dso_local i32 @countDownGood(i32 %n) {
entry:
%foo = alloca [1000 x i32], align 16
%0 = bitcast [1000 x i32]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0)
%arraydecay = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.body
for.cond.cleanup: ; preds = %for.body
call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0)
ret i32 %add
for.body: ; preds = %for.body, %entry
%indvars.iv = phi i64 [ 999, %entry ], [ %indvars.iv.next, %for.body ]
%sum.06 = phi i32 [ 0, %entry ], [ %add, %for.body ]
%arrayidx = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 %indvars.iv
; CHECK-NOT: trap
%1 = load i32, i32* %arrayidx, align 4
%add = add nsw i32 %1, %sum.06
%indvars.iv.next = add nsw i64 %indvars.iv, -1
%cmp = icmp eq i64 %indvars.iv, 0
br i1 %cmp, label %for.cond.cleanup, label %for.body
}
; CHECK-LABEL: @countDownBad
define dso_local i32 @countDownBad(i32 %n) {
entry:
%foo = alloca [1000 x i32], align 16
%0 = bitcast [1000 x i32]* %foo to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0)
%arraydecay = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 0
call void @fill(i32* nonnull %arraydecay, i32 %n)
br label %for.body
for.cond.cleanup: ; preds = %for.body
call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0)
ret i32 %add
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ 999, %entry ], [ %indvars.iv.next, %for.body ]
%sum.06 = phi i32 [ 0, %entry ], [ %add, %for.body ]
%arrayidx = getelementptr inbounds [1000 x i32], [1000 x i32]* %foo, i64 0, i64 %indvars.iv
; CHECK: mul i64 {{.*}}, 4
; CHECK: sub i64 4000, %
; CHECK-NEXT: icmp ult i64 4000, %
; CHECK: trap
%1 = load i32, i32* %arrayidx, align 4
%add = add nsw i32 %1, %sum.06
%indvars.iv.next = add nsw i64 %indvars.iv, -1
%cmp = icmp sgt i64 %indvars.iv, -1
br i1 %cmp, label %for.body, label %for.cond.cleanup
}