748d92b4d3
There's two properties we want to verify: 1. That the successors returned by analyzeBranch are in the CFG successor list, and 2. That there are no extraneous successors are in the CFG successor list. The previous implementation mostly accomplished this, but in a very convoluted manner. Differential Revision: https://reviews.llvm.org/D79793
48 lines
1.5 KiB
YAML
48 lines
1.5 KiB
YAML
# RUN: llc -mtriple=wasm32-unknown-unknown -exception-model=wasm -mattr=+exception-handling -run-pass wasm-late-eh-prepare -run-pass wasm-cfg-stackify %s -o - | FileCheck %s
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# This tests 'try' and 'catch' instructions are correctly placed with respect to
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# EH_LABEL instructions.
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--- |
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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declare i32 @__gxx_wasm_personality_v0(...)
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declare void @foo()
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define void @eh_label_test() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
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ret void
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}
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...
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---
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# CHECK-LABEL: eh_label_test
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name: eh_label_test
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liveins:
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- { reg: '$arguments' }
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body: |
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bb.0:
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; TRY should be before EH_LABEL wrappers of throwing calls
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; CHECK: TRY
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; CHECK-NEXT: EH_LABEL
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; CHECK-NEXT: CALL @foo
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; CHECK-NEXT: EH_LABEL
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successors: %bb.1, %bb.2
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EH_LABEL <mcsymbol .Ltmp0>
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CALL @foo, implicit-def dead $arguments, implicit $sp32, implicit $sp64
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EH_LABEL <mcsymbol .Ltmp1>
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BR %bb.2, implicit-def dead $arguments
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bb.1 (landing-pad):
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; predecessors: %bb.0
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successors: %bb.2
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; CATCH should be after an EH_LABEL at the beginning of an EH pad
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; CHECK: EH_LABEL
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; CHECK-NEXT: CATCH
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EH_LABEL <mcsymbol .Ltmp2>
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dead %0:i32 = EXTRACT_EXCEPTION_I32 implicit-def dead $arguments
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CATCHRET %bb.2, %bb.0, implicit-def dead $arguments
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bb.2:
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; predecessors: %bb.0, %bb.1
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RETURN implicit-def dead $arguments
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...
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