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Add testcases for PR4538, PR4537, and PR4534.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75533 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-07-13 22:30:31 +00:00
parent e2959dc2b1
commit 08d4ec0b20
3 changed files with 17780 additions and 0 deletions
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30
test/Analysis/ScalarEvolution/avoid-infinite-recursion-0.ll Normal file
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; RUN: llvm-as < %s | opt -analyze -scalar-evolution -disable-output
; PR4537
; ModuleID = 'b.bc'
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"
target triple = "x86_64-unknown-linux-gnu"
define i32 @test() {
entry:
%0 = load i32** undef, align 8 ; <i32*> [#uses=1]
%1 = ptrtoint i32* %0 to i64 ; <i64> [#uses=1]
%2 = sub i64 undef, %1 ; <i64> [#uses=1]
%3 = lshr i64 %2, 3 ; <i64> [#uses=1]
%4 = trunc i64 %3 to i32 ; <i32> [#uses=2]
br i1 undef, label %bb10, label %bb4.i
bb4.i: ; preds = %bb4.i, %entry
%i.0.i6 = phi i32 [ %8, %bb4.i ], [ 0, %entry ] ; <i32> [#uses=2]
%5 = sub i32 %4, %i.0.i6 ; <i32> [#uses=1]
%6 = sext i32 %5 to i64 ; <i64> [#uses=1]
%7 = udiv i64 undef, %6 ; <i64> [#uses=1]
%8 = add i32 %i.0.i6, 1 ; <i32> [#uses=2]
%phitmp = icmp eq i64 %7, 0 ; <i1> [#uses=1]
%.not.i = icmp sge i32 %8, %4 ; <i1> [#uses=1]
%or.cond.i = or i1 %phitmp, %.not.i ; <i1> [#uses=1]
br i1 %or.cond.i, label %bb10, label %bb4.i
bb10: ; preds = %bb4.i, %entry
unreachable
}