607c525110
This fixes issue #109250 The issue happens during the `MachineBlockPlacement` pass. The block, whose address was previously not taken, is deemed redundant by the pass and subsequently replaced using `MachineBasicBlock::ReplaceUsesOfBlockWith` in `BranchFolding`. ReplaceUsesOfBlockWith only replaces uses in the terminator. However, `expandPostRAPseudo` introduces new block uses when expanding catchrets. These uses do not get replaced, which results in undefined label errors later on. Marking the block addresss as taken prevents the replacement of the block, without also replacing non-terminator uses.
115 lines
4.3 KiB
LLVM
115 lines
4.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=aarch64-pc-windows-msvc %s -o - | FileCheck %s
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$osfx = comdat any
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declare dso_local i32 @__CxxFrameHandler3(...)
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define void @osfx(ptr %this) comdat personality ptr @__CxxFrameHandler3 {
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; CHECK-LABEL: osfx:
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; CHECK: .Lfunc_begin0:
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; CHECK-NEXT: .seh_proc osfx
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; CHECK-NEXT: .seh_handler __CxxFrameHandler3, @unwind, @except
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; CHECK-NEXT: // %bb.0: // %invoke.cont
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; CHECK-NEXT: stp x19, x20, [sp, #-64]! // 16-byte Folded Spill
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; CHECK-NEXT: .seh_save_regp_x x19, 64
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; CHECK-NEXT: str x21, [sp, #16] // 8-byte Folded Spill
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; CHECK-NEXT: .seh_save_reg x21, 16
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; CHECK-NEXT: stp x29, x30, [sp, #24] // 16-byte Folded Spill
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; CHECK-NEXT: .seh_save_fplr 24
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; CHECK-NEXT: add x29, sp, #24
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; CHECK-NEXT: .seh_add_fp 24
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: sub x9, sp, #32
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; CHECK-NEXT: and sp, x9, #0xffffffffffffffe0
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; CHECK-NEXT: mov x19, sp
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; CHECK-NEXT: mov x1, #-2 // =0xfffffffffffffffe
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; CHECK-NEXT: mov x20, x0
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; CHECK-NEXT: add x8, x19, #0
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; CHECK-NEXT: stur x1, [x29, #24]
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; CHECK-NEXT: lsr x21, x8, #3
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; CHECK-NEXT: adrp x8, osfx
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; CHECK-NEXT: add x8, x8, :lo12:osfx
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: str wzr, [x21]
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; CHECK-NEXT: ldr x0, [x0]
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; CHECK-NEXT: .Ltmp0:
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; CHECK-NEXT: blr x0
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; CHECK-NEXT: .Ltmp1:
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; CHECK-NEXT: // %bb.1: // %invoke.cont12
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; CHECK-NEXT: str wzr, [x20]
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; CHECK-NEXT: str wzr, [x21]
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; CHECK-NEXT: .LBB0_2: // Block address taken
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; CHECK-NEXT: // %try.cont
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; CHECK-NEXT: $ehgcr_0_2:
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: sub sp, x29, #24
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; CHECK-NEXT: .seh_add_fp 24
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; CHECK-NEXT: ldp x29, x30, [sp, #24] // 16-byte Folded Reload
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; CHECK-NEXT: .seh_save_fplr 24
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; CHECK-NEXT: ldr x21, [sp, #16] // 8-byte Folded Reload
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; CHECK-NEXT: .seh_save_reg x21, 16
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; CHECK-NEXT: ldp x19, x20, [sp], #64 // 16-byte Folded Reload
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; CHECK-NEXT: .seh_save_regp_x x19, 64
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: ret
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; CHECK-NEXT: .seh_endfunclet
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; CHECK-NEXT: .seh_handlerdata
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; CHECK-NEXT: .word ($cppxdata$osfx)@IMGREL
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; CHECK-NEXT: .section .text,"xr",discard,osfx
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; CHECK-NEXT: .seh_endproc
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; CHECK-NEXT: .def "?catch$3@?0?osfx@4HA";
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; CHECK-NEXT: .scl 3;
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; CHECK-NEXT: .type 32;
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; CHECK-NEXT: .endef
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; CHECK-NEXT: .p2align 2
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; CHECK-NEXT: "?catch$3@?0?osfx@4HA":
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; CHECK-NEXT: .seh_proc "?catch$3@?0?osfx@4HA"
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; CHECK-NEXT: .seh_handler __CxxFrameHandler3, @unwind, @except
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; CHECK-NEXT: .LBB0_3: // %catch
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; CHECK-NEXT: stp x19, x20, [sp, #-48]! // 16-byte Folded Spill
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; CHECK-NEXT: .seh_save_regp_x x19, 48
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; CHECK-NEXT: str x21, [sp, #16] // 8-byte Folded Spill
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; CHECK-NEXT: .seh_save_reg x21, 16
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; CHECK-NEXT: stp x29, x30, [sp, #24] // 16-byte Folded Spill
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; CHECK-NEXT: .seh_save_fplr 24
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; CHECK-NEXT: .seh_endprologue
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; CHECK-NEXT: adrp x0, .LBB0_2
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; CHECK-NEXT: add x0, x0, .LBB0_2
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; CHECK-NEXT: .seh_startepilogue
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; CHECK-NEXT: ldp x29, x30, [sp, #24] // 16-byte Folded Reload
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; CHECK-NEXT: .seh_save_fplr 24
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; CHECK-NEXT: ldr x21, [sp, #16] // 8-byte Folded Reload
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; CHECK-NEXT: .seh_save_reg x21, 16
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; CHECK-NEXT: ldp x19, x20, [sp], #48 // 16-byte Folded Reload
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; CHECK-NEXT: .seh_save_regp_x x19, 48
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; CHECK-NEXT: .seh_endepilogue
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; CHECK-NEXT: ret
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invoke.cont:
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%MyAlloca2 = alloca [32 x i8], align 32
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%0 = ptrtoint ptr %MyAlloca2 to i64
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store i64 ptrtoint (ptr @osfx to i64), ptr %this
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%1 = lshr exact i64 %0, 3
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%2 = inttoptr i64 %1 to ptr
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store i32 0, ptr %2
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%vbtable = load ptr, ptr %this
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%call.i21 = invoke noundef i32 %vbtable(ptr %vbtable)
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to label %invoke.cont12 unwind label %catch.dispatch
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invoke.cont12: ; preds = %invoke.cont
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store i32 0, ptr %this
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store i32 0, ptr %2
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br label %try.cont
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catch.dispatch: ; preds = %invoke.cont
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%3 = catchswitch within none [label %catch] unwind to caller
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catch: ; preds = %catch.dispatch
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%4 = catchpad within %3 [ptr null, i32 64, ptr null]
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catchret from %4 to label %try.cont
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try.cont: ; preds = %catch, %invoke.cont12
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ret void
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}
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