; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -S -passes="separate-const-offset-from-gep" < %s | FileCheck %s ; Check that GEP with an index 'A - B + [ConstantInt]' will be split into two ; GEPs. eg. ; %A = ... ; %B = ... ; %sub = %A - %B ; %idx = %sub + 10 ; %gep = getelementptr int, ptr %p, %idx ; will be transformed into: ; %A = ... ; %B = ... ; %sub = %A - %B ; %gep_base = getelementptr int, ptr %p, %sub ; %gep = getelementptr int, ptr %gep_base, 10 define void @test_A_sub_B_add_ConstantInt(ptr %p) { ; CHECK-LABEL: @test_A_sub_B_add_ConstantInt( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[TMP0:%.*]] = tail call i32 @foo() ; CHECK-NEXT: [[REM:%.*]] = srem i32 [[TMP0]], 5 ; CHECK-NEXT: br label [[FOR_BODY:%.*]] ; CHECK: for.body: ; CHECK-NEXT: [[K:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[COND_END:%.*]] ] ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[K]], 5 ; CHECK-NEXT: [[SUB1:%.*]] = sub nsw i32 [[MUL]], [[REM]] ; CHECK-NEXT: [[CMP26:%.*]] = icmp ult i32 [[SUB1]], 512 ; CHECK-NEXT: br i1 [[CMP26]], label [[COND_TRUE:%.*]], label [[COND_END]] ; CHECK: cond.true: ; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[MUL]] to i64 ; CHECK-NEXT: [[TMP2:%.*]] = sext i32 [[REM]] to i64 ; CHECK-NEXT: [[SUB22:%.*]] = sub i64 [[TMP2]], [[TMP1]] ; CHECK-NEXT: [[TMP3:%.*]] = ptrtoint ptr [[P:%.*]] to i64 ; CHECK-NEXT: [[TMP4:%.*]] = shl i64 [[SUB22]], 2 ; CHECK-NEXT: [[TMP5:%.*]] = add i64 [[TMP3]], [[TMP4]] ; CHECK-NEXT: [[TMP6:%.*]] = add i64 [[TMP5]], 2044 ; CHECK-NEXT: [[TMP7:%.*]] = inttoptr i64 [[TMP6]] to ptr ; CHECK-NEXT: store float 1.000000e+00, ptr [[TMP7]], align 4 ; CHECK-NEXT: br label [[COND_END]] ; CHECK: cond.end: ; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[K]], 1 ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i32 [[INC]], 100 ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_END:%.*]] ; CHECK: for.end: ; CHECK-NEXT: ret void ; entry: %0 = tail call i32 @foo() %rem = srem i32 %0, 5 %add = add nsw i32 %rem , 511 br label %for.body for.body: %k = phi i32 [ 0, %entry ], [ %inc, %cond.end ] %mul = mul nuw nsw i32 %k, 5 %sub1 = sub nsw i32 %mul, %rem %cmp26 = icmp ult i32 %sub1, 512 br i1 %cmp26, label %cond.true, label %cond.end cond.true: %sub2 = sub nsw i32 %add, %mul %idxprom = sext i32 %sub2 to i64 %arryidx = getelementptr inbounds float, ptr %p, i64 %idxprom store float 1.0, ptr %arryidx, align 4 br label %cond.end cond.end: %inc = add nuw nsw i32 %k, 1 %exitcond = icmp ne i32 %inc, 100 br i1 %exitcond, label %for.body, label %for.end for.end: ret void } declare i32 @foo()