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114 lines
3.2 KiB
YAML
114 lines
3.2 KiB
YAML
# RUN: llc -mtriple=wasm32-unknown-unknown -wasm-use-legacy-eh -wasm-enable-eh -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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--- |
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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 ptr @__gxx_wasm_personality_v0 {
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ret void
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}
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define void @unreachable_ehpad_test() personality ptr @__gxx_wasm_personality_v0 {
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ret void
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}
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define void @empty_cleanuppad_test() personality ptr @__gxx_wasm_personality_v0 {
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ret void
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}
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...
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---
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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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# CHECK-LABEL: name: 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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frameInfo:
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hasCalls: true
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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: bb.0
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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_ALL_LEGACY should be after EH_LABELs in the beginning of an EH pad.
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; (Sometimes there are multiple EH_LABELs in an EH pad. This test tests
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; that.) GLOBAL_SET should follow right after that.
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; CHECK: bb.1
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; CHECK: EH_LABEL
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; CHECK: EH_LABEL
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; CHECK-NEXT: CATCH_ALL_LEGACY
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; CHECK-NEXT: GLOBAL_SET_I32
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EH_LABEL <mcsymbol .Ltmp2>
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EH_LABEL <mcsymbol .Ltmp2>
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CATCHRET %bb.2, %bb.1, 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 $arguments
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...
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---
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# Unreachable EH pads should be removed by LateEHPrepare.
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# CHECK-LABEL: name: unreachable_ehpad_test
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name: unreachable_ehpad_test
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liveins:
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- { reg: '$arguments' }
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body: |
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; CHECK: bb.0
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bb.0:
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successors: %bb.2
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BR %bb.2, implicit-def dead $arguments
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; This EH pad is unreachable, so it should be removed by LateEHPrepare
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; CHECK-NOT: bb.1 (landing-pad)
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bb.1 (landing-pad):
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successors: %bb.2
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EH_LABEL <mcsymbol .Ltmp2>
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CATCHRET %bb.2, %bb.1, implicit-def dead $arguments
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; This BB should remain (it will be renumbered to bb.1)
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; CHECK: bb.1
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bb.2:
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; predecessors: %bb.0, %bb.1
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RETURN implicit-def dead $arguments
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...
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---
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# Regression test for a bug that LateEHPrepare::addCatchAll didn't handle empty
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# cleanup pads. (It tried to get debug info from end() iterator.)
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name: empty_cleanuppad_test
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liveins:
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- { reg: '$arguments' }
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body: |
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bb.0:
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successors: %bb.1, %bb.3
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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.3, implicit-def dead $arguments
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;; Empty cleanuppad
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bb.1 (landing-pad):
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successors: %bb.2
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EH_LABEL <mcsymbol .Ltmp2>
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bb.2:
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successors: %bb.3
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CLEANUPRET %bb.1, implicit-def dead $arguments
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bb.3:
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RETURN implicit-def dead $arguments
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...
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