00f9e5aa76
Summary: This is necessary and sufficient to get simple cases of multiple return working with multivalue enabled. More complex cases will require block and loop signatures to be generalized to potentially be type indices as well. Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68684 llvm-svn: 374235
47 lines
1.4 KiB
YAML
47 lines
1.4 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_VOID @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_VOID @foo, implicit-def dead $arguments, implicit $sp32, implicit $sp64
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EH_LABEL <mcsymbol .Ltmp1>
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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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