derek.holloway
7502bf64a4
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214 lines
7.4 KiB
LLVM
214 lines
7.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
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; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-max-iterations=0 -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@A = weak global [1000 x i32] zeroinitializer, align 32
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define void @PR1101(i32 %N) {
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; CHECK-LABEL: 'PR1101'
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; CHECK-NEXT: Determining loop execution counts for: @PR1101
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; CHECK-NEXT: Loop %bb3: backedge-taken count is i32 10000
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; CHECK-NEXT: Loop %bb3: constant max backedge-taken count is i32 10000
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; CHECK-NEXT: Loop %bb3: symbolic max backedge-taken count is i32 10000
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; CHECK-NEXT: Loop %bb3: Trip multiple is 10001
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;
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entry:
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br label %bb3
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bb: ; preds = %bb3
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%tmp = getelementptr [1000 x i32], ptr @A, i32 0, i32 %i.0 ; <ptr> [#uses=1]
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store i32 123, ptr %tmp
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%tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1]
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br label %bb3
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bb3: ; preds = %bb, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3]
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%tmp3 = icmp sle i32 %i.0, 9999 ; <i1> [#uses=1]
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br i1 %tmp3, label %bb, label %bb5
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bb5: ; preds = %bb3
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br label %return
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return: ; preds = %bb5
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ret void
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}
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define i32 @PR22795() {
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; CHECK-LABEL: 'PR22795'
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; CHECK-NEXT: Determining loop execution counts for: @PR22795
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; CHECK-NEXT: Loop %preheader: backedge-taken count is i64 7
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; CHECK-NEXT: Loop %preheader: constant max backedge-taken count is i64 7
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; CHECK-NEXT: Loop %preheader: symbolic max backedge-taken count is i64 7
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; CHECK-NEXT: Loop %preheader: Trip multiple is 8
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;
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entry:
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%bins = alloca [16 x i64], align 16
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call void @llvm.memset.p0.i64(ptr align 16 %bins, i8 0, i64 128, i1 false)
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br label %preheader
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preheader: ; preds = %for.inc.1, %entry
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%v11 = phi i64 [ 0, %entry ], [ %next12.1, %for.inc.1 ]
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%iv = phi i32 [ -1, %entry ], [ %next.1, %for.inc.1 ]
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%cmp = icmp sgt i64 %v11, 0
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br i1 %cmp, label %for.body, label %for.inc
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for.body: ; preds = %preheader
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%zext = zext i32 %iv to i64
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%arrayidx = getelementptr [16 x i64], ptr %bins, i64 0, i64 %v11
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%loaded = load i64, ptr %arrayidx, align 8
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%add = add i64 %loaded, 1
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%add2 = add i64 %add, %zext
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store i64 %add2, ptr %arrayidx, align 8
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br label %for.inc
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for.inc: ; preds = %for.body, %preheader
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%next12 = add nuw nsw i64 %v11, 1
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%next = add nsw i32 %iv, 1
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br i1 true, label %for.body.1, label %for.inc.1
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end: ; preds = %for.inc.1
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%arrayidx8 = getelementptr [16 x i64], ptr %bins, i64 0, i64 2
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%load = load i64, ptr %arrayidx8, align 16
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%shr4 = lshr i64 %load, 32
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%conv = trunc i64 %shr4 to i32
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ret i32 %conv
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for.body.1: ; preds = %for.inc
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%zext.1 = zext i32 %next to i64
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%arrayidx.1 = getelementptr [16 x i64], ptr %bins, i64 0, i64 %next12
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%loaded.1 = load i64, ptr %arrayidx.1, align 8
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%add.1 = add i64 %loaded.1, 1
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%add2.1 = add i64 %add.1, %zext.1
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store i64 %add2.1, ptr %arrayidx.1, align 8
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br label %for.inc.1
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for.inc.1: ; preds = %for.body.1, %for.inc
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%next12.1 = add nuw nsw i64 %next12, 1
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%next.1 = add nuw nsw i32 %next, 1
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%exitcond.1 = icmp eq i64 %next12.1, 16
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br i1 %exitcond.1, label %end, label %preheader
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}
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; Function Attrs: nounwind
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declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) #0
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declare void @may_exit() nounwind
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define void @pr28012(i32 %n) {
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; CHECK-LABEL: 'pr28012'
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; CHECK-NEXT: Determining loop execution counts for: @pr28012
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; CHECK-NEXT: Loop %loop: backedge-taken count is i32 -1431655751
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 -1431655751
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is i32 -1431655751
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; CHECK-NEXT: Loop %loop: Trip multiple is 2863311546
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;
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
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%iv.inc = add nsw i32 %iv, 3
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call void @may_exit()
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%becond = icmp ne i32 %iv.inc, 46
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br i1 %becond, label %loop, label %leave
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leave:
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ret void
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}
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define void @non_zero_from_loop_guard(i16 %n) {
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; CHECK-LABEL: 'non_zero_from_loop_guard'
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; CHECK-NEXT: Determining loop execution counts for: @non_zero_from_loop_guard
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; CHECK-NEXT: Loop %loop: backedge-taken count is (-1 + (%n /u 2))<nsw>
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; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i16 32766
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; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is (-1 + (%n /u 2))<nsw>
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; CHECK-NEXT: Loop %loop: Trip multiple is 1
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;
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entry:
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%shr = lshr i16 %n, 1
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%precond = icmp ult i16 %n, 2
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br i1 %precond, label %exit, label %loop
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loop:
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%iv = phi i16 [ %inc, %loop ], [ 0, %entry ]
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%inc = add nuw nsw i16 %iv, 1
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%cmp = icmp ult i16 %inc, %shr
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @dual_sext_ne_with_slt_guard(i8 %s, i8 %n) {
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; CHECK-LABEL: 'dual_sext_ne_with_slt_guard'
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; CHECK-NEXT: Determining loop execution counts for: @dual_sext_ne_with_slt_guard
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + (sext i8 %n to i64) + (-1 * (sext i8 %s to i64))<nsw>)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i64 -2
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + (sext i8 %n to i64) + (-1 * (sext i8 %s to i64))<nsw>)
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; CHECK-NEXT: Loop %for.body: Trip multiple is 1
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;
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entry:
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%cmp4 = icmp slt i8 %s, %n
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br i1 %cmp4, label %for.body.preheader, label %exit
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for.body.preheader:
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%0 = sext i8 %s to i64
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%wide.trip.count = sext i8 %n to i64
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br label %for.body
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for.body:
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%iv = phi i64 [ %0, %for.body.preheader ], [ %iv.next, %for.body ]
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%iv.next = add nsw i64 %iv, 1
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%exitcond.not = icmp eq i64 %iv.next, %wide.trip.count
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br i1 %exitcond.not, label %exit, label %for.body
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exit:
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ret void
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}
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define void @dual_sext_ne_with_nsw_inc(i8 %s, i64 %n) {
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; CHECK-LABEL: 'dual_sext_ne_with_nsw_inc'
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; CHECK-NEXT: Determining loop execution counts for: @dual_sext_ne_with_nsw_inc
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i64 -1
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)
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; CHECK-NEXT: Loop %for.body: Trip multiple is 1
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;
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entry:
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%0 = sext i8 %s to i64
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br label %for.body
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for.body:
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%iv = phi i64 [ %0, %entry ], [ %iv.next, %for.body ]
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%iv.next = add nsw i64 %iv, 1
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%exitcond.not = icmp eq i64 %iv.next, %n
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br i1 %exitcond.not, label %exit, label %for.body
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exit:
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ret void
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}
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define void @dual_sext_ne_with_nuw_inc(i8 %s, i64 %n) {
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; CHECK-LABEL: 'dual_sext_ne_with_nuw_inc'
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; CHECK-NEXT: Determining loop execution counts for: @dual_sext_ne_with_nuw_inc
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; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)
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; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i64 -1
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; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)
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; CHECK-NEXT: Loop %for.body: Trip multiple is 1
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;
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entry:
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%0 = sext i8 %s to i64
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br label %for.body
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for.body:
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%iv = phi i64 [ %0, %entry ], [ %iv.next, %for.body ]
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%iv.next = add nuw i64 %iv, 1
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%exitcond.not = icmp eq i64 %iv.next, %n
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br i1 %exitcond.not, label %exit, label %for.body
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exit:
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ret void
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}
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