Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/IndVarSimplify/sharpen-range.ll

@@ -1,114 +0,0 @@
-;; RUN: opt -S < %s -indvars | FileCheck %s
-; RUN: opt -lcssa -loop-simplify -S < %s | opt -S -passes='require<targetir>,require<scalar-evolution>,require<domtree>,loop(indvars)'
-
-;; Check if llvm can narrow !range metadata based on loop entry
-;; predicates.
-
-declare void @abort()
-
-define i1 @bounded_below_slt(i32* nocapture readonly %buffer) {
-; CHECK-LABEL: bounded_below_slt
-entry:
-  %length = load i32, i32* %buffer, !range !0
-  %entry.pred = icmp eq i32 %length, 0
-  br i1 %entry.pred, label %abort, label %loop.preheader
-
-loop.preheader:
-  br label %loop
-
-loop:
-; CHECK: loop
-  %idx = phi i32 [ %idx.inc, %loop.next ], [ 0, %loop.preheader ]
-  %oob.pred = icmp slt i32 %idx, %length
-  br i1 %oob.pred, label %loop.next, label %oob
-; CHECK: br i1 true, label %loop.next, label %oob
-
-loop.next:
-; CHECK: loop.next
-  %idx.inc = add i32 %idx, 1
-  %exit.pred = icmp slt i32 %idx.inc, %length
-  br i1 %exit.pred, label %loop, label %abort.loopexit
-
-abort.loopexit:
-  br label %abort
-
-abort:
-  ret i1 false
-
-oob:
-  tail call void @abort()
-  ret i1 false
-}
-
-define i1 @bounded_below_sle(i32* nocapture readonly %buffer) {
-; CHECK-LABEL: bounded_below_sle
-entry:
-  %length = load i32, i32* %buffer, !range !0
-  %entry.pred = icmp eq i32 %length, 0
-  br i1 %entry.pred, label %abort, label %loop.preheader
-
-loop.preheader:
-  br label %loop
-
-loop:
-; CHECK: loop
-  %idx = phi i32 [ %idx.inc, %loop.next ], [ 0, %loop.preheader ]
-  %oob.pred = icmp sle i32 %idx, %length
-  br i1 %oob.pred, label %loop.next, label %oob
-; CHECK: br i1 true, label %loop.next, label %oob
-
-loop.next:
-; CHECK: loop.next
-  %idx.inc = add i32 %idx, 1
-  %exit.pred = icmp sle i32 %idx.inc, %length
-  br i1 %exit.pred, label %loop, label %abort.loopexit
-
-abort.loopexit:
-  br label %abort
-
-abort:
-  ret i1 false
-
-oob:
-  tail call void @abort()
-  ret i1 false
-}
-
-;; Assert that we're not making an incorrect transform.
-
-declare i32 @check(i8*)
-
-define void @NoChange() {
-; CHECK-LABEL: NoChange
-entry:
-  br label %loop.begin
-
-loop.begin:
-; CHECK: loop.begin:
-  %i.01 = phi i64 [ 2, %entry ], [ %add, %loop.end ]
-  %cmp = icmp ugt i64 %i.01, 1
-; CHECK: %cmp = icmp ugt i64 %i.01, 1
-  br i1 %cmp, label %loop, label %loop.end
-
-loop:
-; CHECK: loop
-  %.sum = add i64 %i.01, -2
-  %v = getelementptr inbounds i8, i8* null, i64 %.sum
-  %r = tail call i32 @check(i8* %v)
-  %c = icmp eq i32 %r, 0
-  br i1 %c, label %loop.end, label %abort.now
-
-abort.now:
-  tail call void @abort()
-  unreachable
-
-loop.end:
-  %add = add i64 %i.01, -1
-  %eq = icmp eq i64 %add, 0
-  br i1 %eq, label %exit, label %loop.begin
-
-exit:
-  ret void
-}
-
-!0 = !{i32 0, i32 100}