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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 32; RUN: opt -S -passes=jump-threading < %s | FileCheck %s3; RUN: opt -S -passes=jump-threading -jump-threading-across-loop-headers < %s | FileCheck %s --check-prefix=THREAD-LOOP4 5; FIXME: This is a miscompile if -jump-threading-across-loop-headers is enabled.6define i64 @test(i64 %v) {7; CHECK-LABEL: define i64 @test(8; CHECK-SAME: i64 [[V:%.*]]) {9; CHECK-NEXT: entry:10; CHECK-NEXT: [[V_NONNEG:%.*]] = icmp sgt i64 [[V]], -111; CHECK-NEXT: br label [[FOR_BODY:%.*]]12; CHECK: for.body:13; CHECK-NEXT: [[SUM:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[SUM_NEXT:%.*]], [[FOR_BODY]] ]14; CHECK-NEXT: [[SUM_NEXT]] = add i64 [[SUM]], [[V]]15; CHECK-NEXT: [[OVERFLOW:%.*]] = icmp ult i64 [[SUM_NEXT]], [[SUM]]16; CHECK-NEXT: [[CMP:%.*]] = xor i1 [[V_NONNEG]], [[OVERFLOW]]17; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[EXIT:%.*]]18; CHECK: exit:19; CHECK-NEXT: ret i64 [[SUM]]20;21; THREAD-LOOP-LABEL: define i64 @test(22; THREAD-LOOP-SAME: i64 [[V:%.*]]) {23; THREAD-LOOP-NEXT: entry:24; THREAD-LOOP-NEXT: [[V_NONNEG:%.*]] = icmp sgt i64 [[V]], -125; THREAD-LOOP-NEXT: br label [[FOR_BODY:%.*]]26; THREAD-LOOP: for.body:27; THREAD-LOOP-NEXT: [[SUM:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[SUM_NEXT:%.*]], [[FOR_BODY]] ]28; THREAD-LOOP-NEXT: [[SUM_NEXT]] = add i64 [[SUM]], [[V]]29; THREAD-LOOP-NEXT: [[OVERFLOW:%.*]] = icmp ult i64 [[SUM_NEXT]], [[SUM]]30; THREAD-LOOP-NEXT: br i1 [[V_NONNEG]], label [[FOR_BODY]], label [[EXIT:%.*]]31; THREAD-LOOP: exit:32; THREAD-LOOP-NEXT: ret i64 [[SUM]]33;34entry:35 %v.nonneg = icmp sgt i64 %v, -136 br label %for.body37 38for.body:39 %sum = phi i64 [ 0, %entry ], [ %sum.next, %for.body ]40 %sum.next = add i64 %sum, %v41 %overflow = icmp ult i64 %sum.next, %sum42 %cmp = xor i1 %v.nonneg, %overflow43 br i1 %cmp, label %for.body, label %exit44 45exit:46 ret i64 %sum47}48