19ddafafdf
…ve offset In Exact mode, the approximation of returning (0,0) is invalid. It only holds in min/max mode.
46 lines
1.7 KiB
LLVM
46 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Check that negative oob gep do not generate invalid check.
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; RUN: opt < %s -passes=bounds-checking -S | FileCheck %s
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target datalayout = "e-p:64:64:64-p1:16:16:16-p2:64:64:64:48-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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@str = global [100 x i8] zeroinitializer, align 1
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define i16 @main() {
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; CHECK-LABEL: @main(
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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 i8 [ 65, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[TMP4:%.*]] ]
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; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i8 [[I_0]], 76
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; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END:%.*]], label [[TMP4]]
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; CHECK: for.inc:
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; CHECK-NEXT: [[I_0_C:%.*]] = sext i8 [[I_0]] to i64
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 -65, [[I_0_C]]
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; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr getelementptr (i8, ptr @str, i8 -65), i8 [[I_0]]
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; CHECK-NEXT: [[TMP1:%.*]] = sub i64 100, [[TMP0]]
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; CHECK-NEXT: store i8 [[I_0]], ptr [[GEP]], align 1
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; CHECK-NEXT: [[INC]] = add nuw nsw i8 [[I_0]], 1
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; CHECK-NEXT: br label [[FOR_COND]]
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; CHECK: for.end:
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; CHECK-NEXT: ret i16 0
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;
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entry:
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br label %for.cond
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for.cond:
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%i.0 = phi i8 [ 65, %entry ], [ %inc, %for.inc ]
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%exitcond.not = icmp eq i8 %i.0, 76
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br i1 %exitcond.not, label %for.end, label %for.inc
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for.inc: ; preds = %for.cond
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%gep = getelementptr i8, ptr getelementptr (i8, ptr @str, i8 -65), i8 %i.0
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store i8 %i.0, ptr %gep, align 1
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%inc = add nuw nsw i8 %i.0, 1
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br label %for.cond
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for.end:
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ret i16 0
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}
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