38 lines
972 B
LLVM
38 lines
972 B
LLVM
; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
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define i32 @slt_trip_count_with_range(i32 *%ptr0, i32 *%ptr1) {
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; CHECK-LABEL: slt_trip_count_with_range
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entry:
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%limit = load i32, i32* %ptr0, !range !0
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br label %loop
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loop:
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; CHECK: Loop %loop: max backedge-taken count is 98
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%index = phi i32 [ 0, %entry ], [ %index.inc, %loop ]
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%index.inc = add i32 %index, 1
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%continue = icmp slt i32 %index.inc, %limit
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br i1 %continue, label %loop, label %loop.exit
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loop.exit:
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ret i32 0
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}
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define i32 @ult_trip_count_with_range(i32 *%ptr0, i32 *%ptr1) {
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; CHECK-LABEL: ult_trip_count_with_range
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entry:
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%limit = load i32, i32* %ptr0, !range !0
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br label %loop
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loop:
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; CHECK: Loop %loop: max backedge-taken count is 98
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%index = phi i32 [ 0, %entry ], [ %index.inc, %loop ]
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%index.inc = add i32 %index, 1
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%continue = icmp ult i32 %index.inc, %limit
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br i1 %continue, label %loop, label %loop.exit
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loop.exit:
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ret i32 0
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}
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!0 = !{i32 1, i32 100}
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