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[WebAssembly] Fix signature parsing for 'try' in AsmParser

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Summary:
Like `block` or `loop`, `try` can take an optional signature which can
be omitted. This patch allows `try`'s signature to be omitted. Also
added some tests for EH instructions.

Reviewers: aardappel

Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits

Differential Revision: https://reviews.llvm.org/D53873

llvm-svn: 345888
This commit is contained in:
Heejin Ahn 2018-11-01 20:32:15 +00:00
parent 2a4a060cab
commit dfc0a29e32
2 changed files with 16 additions and 2 deletions
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2
lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
View File

@ -303,7 +303,7 @@ public:
// assembly, so we add a dummy one explicitly (since we have no control
// over signature tables here, we assume these will be regenerated when
// the wasm module is generated).
if (BaseName == "block" || BaseName == "loop") {
if (BaseName == "block" || BaseName == "loop" || BaseName == "try") {
Operands.push_back(make_unique<WebAssemblyOperand>(
WebAssemblyOperand::Integer, NameLoc, NameLoc,
WebAssemblyOperand::IntOp{-1}));

16
test/MC/WebAssembly/basic-assembly.s
View File

@ -1,4 +1,4 @@
# RUN: llvm-mc -triple=wasm32-unknown-unknown -mattr=+simd128,+nontrapping-fptoint < %s | FileCheck %s
# RUN: llvm-mc -triple=wasm32-unknown-unknown -mattr=+simd128,+nontrapping-fptoint,+exception-handling < %s | FileCheck %s
.text
.type test0,@function
@ -46,6 +46,13 @@ test0:
# TODO: enable once instruction has been added.
#i32x4.trunc_s/f32x4:sat
i32.trunc_s/f32
try
.LBB0_3:
i32.catch 0
.LBB0_4:
catch_all
.LBB0_5:
end_try
#i32.trunc_s:sat/f32
get_global __stack_pointer@GLOBAL
end_function
@ -88,5 +95,12 @@ test0:
# CHECK-NEXT: get_local 5
# CHECK-NEXT: f32x4.add
# CHECK-NEXT: i32.trunc_s/f32
# CHECK-NEXT: try
# CHECK-NEXT: .LBB0_3:
# CHECK-NEXT: i32.catch 0
# CHECK-NEXT: .LBB0_4:
# CHECK-NEXT: catch_all
# CHECK-NEXT: .LBB0_5:
# CHECK-NEXT: end_try
# CHECK-NEXT: get_global __stack_pointer@GLOBAL
# CHECK-NEXT: end_function