98 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py2; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-max-iterations=0 -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"5target triple = "x86_64-unknown-linux-gnu"6 7define void @max_backedge_taken_count_by_wrapping1_nsw_nuw(i8 %N, ptr %ptr) {8; CHECK-LABEL: 'max_backedge_taken_count_by_wrapping1_nsw_nuw'9; CHECK-NEXT: Determining loop execution counts for: @max_backedge_taken_count_by_wrapping1_nsw_nuw10; CHECK-NEXT: Loop %loop: backedge-taken count is (%N /u 4)11; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i8 6312; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is (%N /u 4)13; CHECK-NEXT: Loop %loop: Trip multiple is 114;15entry:16 br label %loop17 18loop:19 %iv = phi i8 [ 0, %entry ], [ %iv.next, %loop ]20 %gep = getelementptr i8, ptr %ptr, i8 %iv21 store i8 %iv, ptr %gep22 %iv.next = add nuw nsw i8 %iv, 423 %ec = icmp ne i8 %iv, %N24 br i1 %ec, label %loop, label %exit25 26exit:27 ret void28}29 30define void @max_backedge_taken_count_by_wrapping1_nuw(i8 %N, ptr %ptr) {31; CHECK-LABEL: 'max_backedge_taken_count_by_wrapping1_nuw'32; CHECK-NEXT: Determining loop execution counts for: @max_backedge_taken_count_by_wrapping1_nuw33; CHECK-NEXT: Loop %loop: backedge-taken count is (%N /u 4)34; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i8 6335; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is (%N /u 4)36; CHECK-NEXT: Loop %loop: Trip multiple is 137;38entry:39 br label %loop40 41loop:42 %iv = phi i8 [ 0, %entry ], [ %iv.next, %loop ]43 %gep = getelementptr i8, ptr %ptr, i8 %iv44 store i8 %iv, ptr %gep45 %iv.next = add nuw i8 %iv, 446 %ec = icmp ne i8 %iv, %N47 br i1 %ec, label %loop, label %exit48 49exit:50 ret void51}52 53define void @max_backedge_taken_count_by_wrapping2_nsw_nuw(i8 %N, ptr %ptr) {54; CHECK-LABEL: 'max_backedge_taken_count_by_wrapping2_nsw_nuw'55; CHECK-NEXT: Determining loop execution counts for: @max_backedge_taken_count_by_wrapping2_nsw_nuw56; CHECK-NEXT: Loop %loop: backedge-taken count is ((-64 + %N) /u 4)57; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i8 6358; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is ((-64 + %N) /u 4)59; CHECK-NEXT: Loop %loop: Trip multiple is 160;61entry:62 br label %loop63 64loop:65 %iv = phi i8 [ 64, %entry ], [ %iv.next, %loop ]66 %gep = getelementptr i8, ptr %ptr, i8 %iv67 store i8 %iv, ptr %gep68 %iv.next = add nuw nsw i8 %iv, 469 %ec = icmp ne i8 %iv, %N70 br i1 %ec, label %loop, label %exit71 72exit:73 ret void74}75 76define void @max_backedge_taken_count_by_wrapping2_nuw(i8 %N, ptr %ptr) {77; CHECK-LABEL: 'max_backedge_taken_count_by_wrapping2_nuw'78; CHECK-NEXT: Determining loop execution counts for: @max_backedge_taken_count_by_wrapping2_nuw79; CHECK-NEXT: Loop %loop: backedge-taken count is ((-64 + %N) /u 4)80; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i8 6381; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is ((-64 + %N) /u 4)82; CHECK-NEXT: Loop %loop: Trip multiple is 183;84entry:85 br label %loop86 87loop:88 %iv = phi i8 [ 64, %entry ], [ %iv.next, %loop ]89 %gep = getelementptr i8, ptr %ptr, i8 %iv90 store i8 %iv, ptr %gep91 %iv.next = add nuw i8 %iv, 492 %ec = icmp ne i8 %iv, %N93 br i1 %ec, label %loop, label %exit94 95exit:96 ret void97}98