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TheRock/compiler/amd-llvm/polly/test/ScopDetect/non-constant-add-rec-start-expr.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

50 lines
1.5 KiB
LLVM

; RUN: opt %loadNPMPolly '-passes=polly-custom<detect>' -polly-print-detect -disable-output < %s 2>&1 | FileCheck %s
; CHECK: Valid Region for Scop: bb11 => bb25
; Ensure that this test case does not trigger an assertion. At some point,
; we asserted on scops containing accesses where the access function contained
; an AddRec expression with a non-constant step expression. This got missed, as
; this very specific pattern does not seem too common. Even in this test case,
; it disappears as soon as we turn the infinite loop into a finite loop.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define void @hoge() local_unnamed_addr {
bb:
%tmp = alloca [18 x [16 x i32]]
%tmp1 = alloca [17 x i32]
br label %bb2
bb2:
%tmp3 = phi i64 [ 0, %bb ], [ %tmp5, %bb2 ]
%tmp4 = add nuw nsw i64 %tmp3, 2
%tmp5 = add nuw nsw i64 %tmp3, 1
br i1 undef, label %bb2, label %bb11
bb11:
%tmp12 = phi i64 [ %tmp23, %bb24 ], [ 1, %bb2 ]
%tmp14 = getelementptr inbounds [17 x i32], ptr %tmp1, i64 0, i64 1
br label %bb15
bb15:
%tmp16 = sub nsw i64 %tmp12, 1
%tmp17 = shl i64 %tmp16, 32
%tmp18 = ashr exact i64 %tmp17, 32
%tmp19 = getelementptr inbounds [18 x [16 x i32]], ptr %tmp, i64 0, i64 %tmp4, i64 %tmp18
%tmp20 = load i32, ptr %tmp19, align 4
store i32 4, ptr %tmp19
br label %bb21
bb21:
%tmp23 = add nuw nsw i64 %tmp12, 1
br i1 true, label %bb24, label %bb25
bb24:
br label %bb11
bb25:
ret void
}