1d4e04f7a7
On Wasm, it's not currently possibly to change which `personality` is attached to a given IR function. This is primarily because no matter what `personality` is attached, codegen creates a call to a `Unwind_CallPersonality` wrapper hard-coded to call c++abi's personality. In order to allow alternative personalities without introducing bloat at each personality call site, this PR adjusts the ABI of the personality on Wasm. `Unwind_CallPersonality` is moved to `libcxxabi` under the name `__gxx_wasm_personality_v0`, with the "real" personality code renamed `__gxx_personality_imp` and called by `__gxx_wasm_personality_v0` (after resetting the landing pad context). The signature of EH personalities on Wasm is now `int personality(void* exception_object)` (where the int return is `_Unwind_Reason_Code` and the `void*` is `_Unwind_Exception*`), and personalities are expected to `__wasm_lpad_context.selector = 0;`. Based on #175202
102 lines
2.6 KiB
YAML
102 lines
2.6 KiB
YAML
# RUN: llc -mtriple=wasm32-unknown-unknown -exception-model=wasm -wasm-enable-sjlj -mattr=+exception-handling,+multivalue,+simd128 -run-pass wasm-cfg-sort -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(ptr)
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declare void @foo()
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define void @function_property_test() {
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ret void
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}
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;; Param / results tests
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define i32 @i32__i64(i64) {
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ret i32 0
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}
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define void @void__i32_i64_f32_f64() {
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ret void
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}
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define void @void__v16i8_v8i16_v4i32_v2i64(<16 x i8>, <8 x i16>, <4 x i32>, <2 x i64>) {
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ret void
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}
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%pair = type { i32, i64 }
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define %pair @i32_i64__i32_i64(%pair %p) {
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ret %pair %p
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}
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...
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# CHECK-LABEL: name: function_property_test
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# CHECK: machineFunctionInfo:
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# CHECK: isCFGStackified: true
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name: function_property_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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RETURN implicit-def dead $arguments
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...
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# Param / results tests
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---
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# CHECK-LABEL: name: i32__i64
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# CHECK: machineFunctionInfo:
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# CHECK: params: [ i64 ]
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# CHECK-NEXT: results: [ i32 ]
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name: i32__i64
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liveins:
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- { reg: '$arguments' }
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machineFunctionInfo:
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params: [ i64 ]
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results: [ i32 ]
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body: |
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bb.0:
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%0:i32 = CONST_I32 3, implicit-def dead $arguments
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RETURN %0:i32, implicit-def dead $arguments
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...
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---
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# CHECK-LABEL: name: void__i32_i64_f32_f64
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# CHECK: machineFunctionInfo:
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# CHECK: params: [ i32, i64, f32, f64 ]
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# CHECK-NEXT: results: [ ]
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name: void__i32_i64_f32_f64
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liveins:
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- { reg: '$arguments' }
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machineFunctionInfo:
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params: [ i32, i64, f32, f64 ]
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results: [ ]
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body: |
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bb.0:
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RETURN implicit-def dead $arguments
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...
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---
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# CHECK-LABEL: name: void__v16i8_v8i16_v4i32_v2i64
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# CHECK: machineFunctionInfo:
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# CHECK: params: [ v16i8, v8i16, v4i32, v2i64 ]
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# CHECK-NEXT: results: [ ]
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name: void__v16i8_v8i16_v4i32_v2i64
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liveins:
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- { reg: '$arguments' }
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machineFunctionInfo:
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params: [ v16i8, v8i16, v4i32, v2i64 ]
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results: [ ]
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body: |
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bb.0:
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RETURN implicit-def dead $arguments
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...
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---
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# CHECK-LABEL: name: i32_i64__i32_i64
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# CHECK: machineFunctionInfo:
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# CHECK: params: [ i32, i64 ]
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# CHECK-NEXT: results: [ i32, i64 ]
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name: i32_i64__i32_i64
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liveins:
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- { reg: '$arguments' }
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machineFunctionInfo:
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params: [ i32, i64 ]
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results: [ i32, i64 ]
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body: |
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bb.0:
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%0:i32 = ARGUMENT_i32 0, implicit $arguments
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%1:i64 = ARGUMENT_i64 1, implicit $arguments
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RETURN %0, %1, implicit-def dead $arguments
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...
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