--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
+
+target datalayout = "p:32:32:32"
+
+declare void @llvm.assume(i1)
+
+define i1 @gep_idx_implicit_truncate(ptr %dst, i64 %off) {
+; CHECK-LABEL: @gep_idx_implicit_truncate(
+; CHECK-NEXT: [[POS:%.*]] = icmp sge i64 [[OFF:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[POS]])
+; CHECK-NEXT: [[GEP_OFF:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i64 [[OFF]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp ule ptr [[DST]], [[GEP_OFF]]
+; CHECK-NEXT: ret i1 true
+;
+ %pos = icmp sge i64 %off, 0
+ call void @llvm.assume(i1 %pos)
+ %gep.off = getelementptr inbounds i8, ptr %dst, i64 %off
+ %cmp = icmp ule ptr %dst, %gep.off
+ ret i1 %cmp
+}
+
+define i1 @gep_idx_explicit_truncate(ptr %dst, i64 %off) {
+; CHECK-LABEL: @gep_idx_explicit_truncate(
+; CHECK-NEXT: [[POS:%.*]] = icmp sge i64 [[OFF:%.*]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[POS]])
+; CHECK-NEXT: [[T:%.*]] = trunc i64 [[OFF]] to i32
+; CHECK-NEXT: [[GEP_OFF:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i32 [[T]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp ule ptr [[DST]], [[GEP_OFF]]
+; CHECK-NEXT: ret i1 [[CMP]]
+;
+ %pos = icmp sge i64 %off, 0
+ call void @llvm.assume(i1 %pos)
+ %t = trunc i64 %off to i32
+ %gep.off = getelementptr inbounds i8, ptr %dst, i32 %t
+ %cmp = icmp ule ptr %dst, %gep.off
+ ret i1 %cmp
+}