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[Test] Add XFAIL unit test for PR50765

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Max Kazantsev 2021-06-18 16:25:09 +07:00
parent 921bbbb45e
commit bc696a57a2
1 changed files with 68 additions and 0 deletions
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68
test/Transforms/LoopStrengthReduce/pr50765.ll Normal file
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; RUN: opt -S -loop-reduce < %s | FileCheck %s
; XFAIL: *
; REQUIRES: asserts
;
;This test produces zero factor that becomes a denumerator and fails an assetion.
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2"
target triple = "x86_64-unknown-linux-gnu"
define void @test() {
; CHECK-LABEL: test
bb:
%tmp = load i32, i32 addrspace(3)* undef, align 4
br label %bb1
bb1: ; preds = %bb38, %bb
%tmp2 = phi i64 [ undef, %bb ], [ %tmp6, %bb38 ]
%tmp3 = phi i32 [ %tmp, %bb ], [ 1, %bb38 ]
%tmp4 = add i32 %tmp3, 1
%tmp5 = call i32 @llvm.smax.i32(i32 %tmp4, i32 74)
%tmp6 = add nuw nsw i64 %tmp2, 1
br i1 undef, label %bb7, label %bb38
bb7: ; preds = %bb1
%tmp8 = trunc i64 %tmp6 to i32
%tmp9 = sub nsw i32 3, %tmp5
%tmp10 = mul i32 %tmp9, %tmp8
br label %bb11
bb11: ; preds = %bb11, %bb7
%tmp12 = phi i32 [ undef, %bb7 ], [ %tmp17, %bb11 ]
%tmp13 = phi i64 [ 3, %bb7 ], [ %tmp22, %bb11 ]
%tmp14 = phi i64 [ undef, %bb7 ], [ %tmp23, %bb11 ]
%tmp15 = add i32 %tmp12, %tmp10
%tmp16 = add nuw nsw i64 %tmp13, 1
%tmp17 = add i32 %tmp15, %tmp10
%tmp18 = add i32 %tmp17, undef
%tmp19 = sub i32 %tmp18, undef
%tmp20 = sext i32 %tmp19 to i64
%tmp21 = add nsw i64 undef, %tmp20
%tmp22 = add nuw nsw i64 %tmp13, 2
%tmp23 = add i64 %tmp14, -2
%tmp24 = icmp eq i64 %tmp23, 0
br i1 %tmp24, label %bb25, label %bb11
bb25: ; preds = %bb11
%tmp26 = trunc i64 %tmp16 to i32
%tmp27 = icmp ult i32 %tmp26, 52
%tmp28 = trunc i64 %tmp22 to i32
%tmp29 = mul i32 %tmp9, %tmp28
%tmp30 = add i32 undef, %tmp29
%tmp31 = mul i32 %tmp30, %tmp8
%tmp32 = add i32 undef, %tmp31
%tmp33 = add i32 %tmp32, 34
%tmp34 = trunc i64 %tmp21 to i32
%tmp35 = add i32 %tmp33, undef
%tmp36 = sub i32 %tmp35, %tmp34
%tmp37 = sext i32 %tmp36 to i64
unreachable
bb38: ; preds = %bb1
br label %bb1
}
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
declare i32 @llvm.smax.i32(i32, i32) #0
attributes #0 = { nofree nosync nounwind readnone speculatable willreturn }