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TheRock/compiler/amd-llvm/llvm/test/Transforms/IndVarSimplify/use-range-metadata.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

38 lines
783 B
LLVM

;; RUN: opt -S < %s -passes=indvars | FileCheck %s
;; Check if IndVarSimplify understands !range metadata.
declare void @abort()
define i1 @iterate(ptr nocapture readonly %buffer) {
entry:
%length = load i32, ptr %buffer, !range !0
br label %loop.preheader
loop.preheader:
br label %loop
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:
%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
}
!0 = !{i32 1, i32 100}