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Reland r341269. Use std::stable_sort when sorting constant condidates. Reverting commit, r341365: Revert r341269: [Constant Hoisting] Hoisting Constant GEP Expressions One of the tests is failing 50% of the time when expensive checks are enabled. Not sure how deep the problem is so just reverting while the author can investigate so that the bots stop repeatedly failing and blaming things incorrectly. Will respond with details on the original commit. Original commit, r341269: [Constant Hoisting] Hoisting Constant GEP Expressions Leverage existing logic in constant hoisting pass to transform constant GEP expressions sharing the same base global variable. Multi-dimensional GEPs are rewritten into single-dimensional GEPs. https://reviews.llvm.org/D51396 Differential Revision: https://reviews.llvm.org/D51654 llvm-svn: 341417
43 lines
2.2 KiB
LLVM
43 lines
2.2 KiB
LLVM
; RUN: opt -consthoist -consthoist-gep -S -o - %s | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "thumbv6m-none--musleabi"
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; Check that constant GEP expressions are rewritten to one-dimensional
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; (single-index) GEPs, whose base poiner is a multi-dimensional GEP.
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; CHECK-DAG: %[[C1:const[0-9]?]] = bitcast i32* getelementptr inbounds (%0, %0* @global, i32 0, i32 4, i32 11, i32 0) to i32*
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; CHECK-DAG: %[[C2:const[0-9]?]] = bitcast i32* getelementptr inbounds (%0, %0* @global, i32 0, i32 4, i32 0, i32 0) to i32*
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; CHECK: store i32 undef, i32* %[[C2]], align 4
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; CHECK-NEXT: %[[BC1:[a-z0-9_]+]] = bitcast i32* %[[C2]] to i8*
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; CHECK-NEXT: %[[M1:[a-z0-9_]+]] = getelementptr i8, i8* %[[BC1]], i32 4
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; CHECK-NEXT: %[[BC2:[a-z0-9_]+]] = bitcast i8* %[[M1]] to i32*
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; CHECK-NEXT: store i32 undef, i32* %[[BC2]], align 4
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; CHECK-NEXT: store i32 undef, i32* %[[C1]], align 4
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; CHECK-NEXT: %[[BC3:[a-z0-9_]+]] = bitcast i32* %[[C1]] to i8*
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; CHECK-NEXT: %[[M2:[a-z0-9_]+]] = getelementptr i8, i8* %[[BC3]], i32 4
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; CHECK-NEXT: %[[BC4:[a-z0-9_]+]] = bitcast i8* %[[M2]] to i32*
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; CHECK-NEXT: store i32 undef, i32* %[[BC4]], align 4
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%0 = type { %1, %2, [9 x i16], %6, %7 }
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%1 = type { i32, i32, i32, i32, i32, i32, i16, i16, i8, i8, i16, i32, i32, i16, i8, i8 }
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%2 = type { i32, %3, i8, i8, i8, i8, i32, %4, %5, [16 x i8], i16, i16, i8, i8, i8, i8, i32, i32, i32 }
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%3 = type { i16, i8, i8 }
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%4 = type { i16, i8, i8 }
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%5 = type { i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8 }
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%6 = type { i8, i8 }
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%7 = type { [5 x i32], [3 x i32], [6 x i32], [3 x i32], [2 x i32], [4 x i32], [3 x i32], [2 x i32], [4 x i32], [5 x i32], [3 x i32], [6 x i32], [1 x i32], i32, i32, i32, i32, i32, i32 }
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@global = external dso_local local_unnamed_addr global %0, align 4
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define dso_local void @zot() {
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bb:
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store i32 undef, i32* getelementptr inbounds (%0, %0* @global, i32 0, i32 4, i32 0, i32 0), align 4
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store i32 undef, i32* getelementptr inbounds (%0, %0* @global, i32 0, i32 4, i32 0, i32 1), align 4
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store i32 undef, i32* getelementptr inbounds (%0, %0* @global, i32 0, i32 4, i32 11, i32 0), align 4
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store i32 undef, i32* getelementptr inbounds (%0, %0* @global, i32 0, i32 4, i32 11, i32 1), align 4
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ret void
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}
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