7b0d59da9a
`isValidRewrite()` checks that the both the original SCEV, and the rewrite SCEV have the same base pointer. I //believe//, after all the recent SCEV improvements, this invariant is already enforced by SCEV itself. I originally tried changing it into an assert in D108043, but that showed that it triggers on e.g. https://reviews.llvm.org/D108043#2946621, where SCEV manages to forward the store to load, test added. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D108655
63 lines
1.9 KiB
LLVM
63 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -indvars -S %s | FileCheck %s
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@g_2168 = external global [4 x [6 x i32]], align 16
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@g_1150 = external global i32*, align 8
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define internal fastcc void @func_2() unnamed_addr {
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; CHECK-LABEL: @func_2(
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; CHECK-NEXT: lbl_2898.preheader:
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; CHECK-NEXT: br label [[LBL_2898:%.*]]
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; CHECK: lbl_2898.loopexit:
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; CHECK-NEXT: store i32* getelementptr inbounds ([4 x [6 x i32]], [4 x [6 x i32]]* @g_2168, i64 0, i64 3, i64 1), i32** @g_1150, align 8
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; CHECK-NEXT: br label [[LBL_2898]]
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; CHECK: lbl_2898:
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; CHECK-NEXT: br label [[FOR_COND884:%.*]]
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; CHECK: for.cond884:
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; CHECK-NEXT: br i1 false, label [[FOR_BODY888:%.*]], label [[LBL_2898_LOOPEXIT:%.*]]
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; CHECK: for.body888:
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; CHECK-NEXT: br label [[FOR_COND918:%.*]]
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; CHECK: for.cond918:
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; CHECK-NEXT: br label [[FOR_END926:%.*]]
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; CHECK: for.end926:
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; CHECK-NEXT: br label [[FOR_COND936:%.*]]
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; CHECK: for.cond936:
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; CHECK-NEXT: br label [[FOR_END987:%.*]]
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; CHECK: for.end987:
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; CHECK-NEXT: br label [[FOR_COND884]]
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;
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lbl_2898.preheader:
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br label %lbl_2898
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lbl_2898.loopexit:
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%.lcssa = phi i32* [ %0, %for.cond884 ]
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store i32* %.lcssa, i32** @g_1150, align 8
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br label %lbl_2898
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lbl_2898:
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%g_1150.promoted = load i32*, i32** @g_1150, align 8
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br label %for.cond884
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for.cond884:
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%0 = phi i32* [ getelementptr inbounds ([4 x [6 x i32]], [4 x [6 x i32]]* @g_2168, i64 0, i64 3, i64 1), %for.end987 ], [ %g_1150.promoted, %lbl_2898 ]
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%storemerge9 = phi i16 [ %add990, %for.end987 ], [ 0, %lbl_2898 ]
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%cmp886 = icmp slt i16 %storemerge9, 3
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br i1 %cmp886, label %for.body888, label %lbl_2898.loopexit
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for.body888:
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br label %for.cond918
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for.cond918:
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br label %for.end926
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for.end926:
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br label %for.cond936
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for.cond936:
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br label %for.end987
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for.end987:
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%add990 = add i16 %storemerge9, 1
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br label %for.cond884
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}
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