forked from OSchip/llvm-project
87 lines
3.5 KiB
LLVM
87 lines
3.5 KiB
LLVM
; RUN: opt %loadPolly -polly-optree -polly-opt-isl -polly-codegen -S < %s | FileCheck %s
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;
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; llvm.org/PR35362
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; isl codegen does not allow to generate isl_ast_expr from pw_aff which have an
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; empty domain. This happens in this case because the pw_aff's domain is
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; excluded by the SCoP's parameter context.
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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@c = external local_unnamed_addr global i8
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@a = external local_unnamed_addr global i16
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@b = external local_unnamed_addr global i8
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define void @fn1() {
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entry:
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%a.promoted = load i16, i16* @a
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br label %for.cond
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for.cond: ; preds = %for.cond3.for.end_crit_edge, %entry
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%inc.lcssa17 = phi i16 [ 0, %for.cond3.for.end_crit_edge ], [ %a.promoted, %entry ]
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br label %for.body
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for.body: ; preds = %for.cond
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%conv = zext i16 %inc.lcssa17 to i32
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%div = udiv i32 -286702568, %conv
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br i1 undef, label %if.end, label %if.then
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if.then: ; preds = %for.body
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unreachable
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if.end: ; preds = %for.body
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br label %for.body5.lr.ph
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for.body5.lr.ph: ; preds = %if.end
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%tmp = load i8, i8* @b, align 1
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%cmp = icmp eq i32 %div, 1
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br i1 %cmp, label %for.body5.lr.ph.split.us, label %for.body5.lr.ph.split
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for.body5.lr.ph.split.us: ; preds = %for.body5.lr.ph
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br label %lor.end.us.peel
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lor.end.us.peel: ; preds = %for.body5.lr.ph.split.us
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%inc.us.peel = add i16 %inc.lcssa17, 1
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br i1 false, label %for.cond3.for.end_crit_edge, label %for.body5.us.peel.next
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for.body5.us.peel.next: ; preds = %lor.end.us.peel
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br label %lor.end.us
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lor.end.us: ; preds = %lor.end.us, %for.body5.us.peel.next
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%tmp1 = phi i16 [ %inc.us.peel, %for.body5.us.peel.next ], [ %inc.us, %lor.end.us ]
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%inc.us = add i16 %tmp1, 1
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%tobool4.us = icmp eq i16 %inc.us, 0
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br i1 %tobool4.us, label %for.cond3.for.end_crit_edge, label %lor.end.us
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for.body5.lr.ph.split: ; preds = %for.body5.lr.ph
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br label %lor.end.peel
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lor.end.peel: ; preds = %for.body5.lr.ph.split
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%inc.peel = add i16 %inc.lcssa17, 1
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br i1 false, label %for.cond3.for.end_crit_edge, label %for.body5.peel.next
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for.body5.peel.next: ; preds = %lor.end.peel
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br label %lor.end
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lor.end: ; preds = %lor.end, %for.body5.peel.next
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%tmp2 = phi i16 [ %inc.peel, %for.body5.peel.next ], [ %inc, %lor.end ]
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%inc = add i16 %tmp2, 1
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%tobool4 = icmp eq i16 %inc, 0
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br i1 %tobool4, label %for.cond3.for.end_crit_edge, label %lor.end
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for.cond3.for.end_crit_edge: ; preds = %lor.end, %lor.end.peel, %lor.end.us, %lor.end.us.peel
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%tmp3 = phi i8 [ %tmp, %lor.end.us.peel ], [ %tmp, %lor.end.peel ], [ %tmp, %lor.end.us ], [ %tmp, %lor.end ]
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store i8 4, i8* @c
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br label %for.cond
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}
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; The reference to @b should have been generated from an isl_ast_expr.
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; Because isl is unable to generate it in this case, the code generator
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; resorted to use the pointer argument of %tmp = load ... .
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; It is not important since this code will never be executed.
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; CHECK: polly.stmt.lor.end.us.peel:
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; CHECK-NEXT: %tmp_p_scalar_1 = load i8, i8* @b
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; CHECK-NEXT: store i8 %tmp_p_scalar_1, i8* %tmp3.phiops
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; CHECK-NEXT: br label %polly.merge
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