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31 lines
1.1 KiB
31 lines
1.1 KiB
4 months ago
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; RUN: opt < %s -analyze -scalar-evolution
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; PR4537
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; ModuleID = 'b.bc'
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @test() {
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entry:
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%0 = load i32*, i32** undef, align 8 ; <i32*> [#uses=1]
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%1 = ptrtoint i32* %0 to i64 ; <i64> [#uses=1]
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%2 = sub i64 undef, %1 ; <i64> [#uses=1]
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%3 = lshr i64 %2, 3 ; <i64> [#uses=1]
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%4 = trunc i64 %3 to i32 ; <i32> [#uses=2]
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br i1 undef, label %bb10, label %bb4.i
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bb4.i: ; preds = %bb4.i, %entry
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%i.0.i6 = phi i32 [ %8, %bb4.i ], [ 0, %entry ] ; <i32> [#uses=2]
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%5 = sub i32 %4, %i.0.i6 ; <i32> [#uses=1]
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%6 = sext i32 %5 to i64 ; <i64> [#uses=1]
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%7 = udiv i64 undef, %6 ; <i64> [#uses=1]
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%8 = add i32 %i.0.i6, 1 ; <i32> [#uses=2]
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%phitmp = icmp eq i64 %7, 0 ; <i1> [#uses=1]
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%.not.i = icmp sge i32 %8, %4 ; <i1> [#uses=1]
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%or.cond.i = or i1 %phitmp, %.not.i ; <i1> [#uses=1]
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br i1 %or.cond.i, label %bb10, label %bb4.i
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bb10: ; preds = %bb4.i, %entry
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unreachable
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}
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