c9066c5d37
In the combination of addressing modes, when replacing the matched phi nodes, sometimes the phi node to be replaced has been modified. For example, there’s matcher set [A, B] and [C, A], which will have cyclic dependency: A is replaced by B and C will be replaced by A. Because we tried to match new phi node to another new phi node, we should ignore new phi nodes when mapping new phi node to old one. Reviewed By: skatkov Differential Revision: https://reviews.llvm.org/D108635
79 lines
4.0 KiB
LLVM
79 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -codegenprepare -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s
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@_MergedGlobals = external dso_local global <{ i32, i32 }>, align 4
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define dso_local i32 @f(i1 %a, i8 %b) local_unnamed_addr {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: br label [[TMP6:%.*]]
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; CHECK: 1:
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; CHECK-NEXT: br i1 [[A:%.*]], label [[TMP2:%.*]], label [[TMP6]]
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; CHECK: 2:
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; CHECK-NEXT: [[TMP3:%.*]] = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), [[TMP1:%.*]] ], [ [[TMP16:%.*]], [[TMP14:%.*]] ]
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; CHECK-NEXT: [[TMP4:%.*]] = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), [[TMP1]] ], [ [[TMP15:%.*]], [[TMP14]] ]
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; CHECK-NEXT: ret i32 0
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; CHECK: 5:
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; CHECK-NEXT: br label [[TMP6]]
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; CHECK: 6:
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; CHECK-NEXT: [[TMP7:%.*]] = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 0), [[TMP0:%.*]] ], [ [[TMP3]], [[TMP5:%.*]] ], [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), [[TMP1]] ]
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; CHECK-NEXT: [[TMP8:%.*]] = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 0), [[TMP0]] ], [ [[TMP4]], [[TMP5]] ], [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), [[TMP1]] ]
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; CHECK-NEXT: br label [[TMP9:%.*]]
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; CHECK: 9:
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; CHECK-NEXT: [[TMP10:%.*]] = phi i32* [ [[TMP16]], [[TMP14]] ], [ [[TMP7]], [[TMP6]] ]
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; CHECK-NEXT: [[TMP11:%.*]] = phi i32* [ [[TMP16]], [[TMP14]] ], [ [[TMP8]], [[TMP6]] ]
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; CHECK-NEXT: [[TMP12:%.*]] = phi i32* [ [[TMP15]], [[TMP14]] ], [ [[TMP8]], [[TMP6]] ]
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; CHECK-NEXT: br i1 [[A]], label [[TMP14]], label [[TMP13:%.*]]
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; CHECK: 13:
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; CHECK-NEXT: store i32 5, i32* [[TMP11]], align 4
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; CHECK-NEXT: br label [[TMP14]]
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; CHECK: 14:
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; CHECK-NEXT: [[TMP15]] = phi i32* [ [[TMP12]], [[TMP13]] ], [ [[TMP10]], [[TMP9]] ]
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; CHECK-NEXT: [[TMP16]] = phi i32* [ [[TMP11]], [[TMP13]] ], [ [[TMP10]], [[TMP9]] ]
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; CHECK-NEXT: br i1 [[A]], label [[TMP2]], label [[TMP9]]
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;
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br label %11
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1: ; No predecessors!
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br i1 %a, label %2, label %10
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2: ; preds = %22, %1
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%3 = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), %1 ], [ %21, %22 ]
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%4 = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), %1 ], [ %20, %22 ]
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ret i32 0
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5: ; No predecessors!
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%6 = icmp ugt i8 %b, 50
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br label %7
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7: ; preds = %10, %5
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%8 = phi i32* [ %3, %5 ], [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), %10 ]
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%9 = phi i32* [ %4, %5 ], [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 1), %10 ]
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br label %11
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10: ; preds = %1
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br label %7
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11: ; preds = %7, %0
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%12 = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 0), %0 ], [ %8, %7 ]
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%13 = phi i32* [ getelementptr inbounds (<{ i32, i32 }>, <{ i32, i32 }>* @_MergedGlobals, i32 0, i32 0), %0 ], [ %9, %7 ]
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br label %14
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14: ; preds = %19, %11
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%15 = phi i32* [ %21, %19 ], [ %12, %11 ]
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%16 = phi i32* [ %21, %19 ], [ %13, %11 ]
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%17 = phi i32* [ %20, %19 ], [ %13, %11 ]
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br i1 %a, label %19, label %18
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18: ; preds = %14
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store i32 5, i32* %16, align 4
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br label %19
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19: ; preds = %18, %14
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%20 = phi i32* [ %17, %18 ], [ %15, %14 ]
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%21 = phi i32* [ %16, %18 ], [ %15, %14 ]
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br i1 %a, label %22, label %14
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22: ; preds = %19
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br label %2
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}
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