From: Derek Schuff <dschuff@google.com>
Date: Mon, 17 Apr 2017 20:28:28 +0000 (+0000)
Subject: [WebAssembly] Encode block signatures as SLEB instead of ULEB
X-Git-Tag: llvmorg-5.0.0-rc1~7519
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7a4f3dd95b907b693a986cb0cf076fa1e93e276;p=platform%2Fupstream%2Fllvm.git

[WebAssembly] Encode block signatures as SLEB instead of ULEB

Use SLEB (varint) for block_type immediates in accordance with the spec.

Patch by Yury Delendik

llvm-svn: 300490
---

diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp
index a0b0089..544cd65 100644
--- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp
+++ b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCCodeEmitter.cpp
@@ -94,6 +94,8 @@ void WebAssemblyMCCodeEmitter::encodeInstruction(
               MCFixupKind(WebAssembly::fixup_code_global_index), MI.getLoc()));
           ++MCNumFixups;
           encodeULEB128(uint64_t(MO.getImm()), OS);
+        } else if (Info.OperandType == WebAssembly::OPERAND_SIGNATURE) {
+          encodeSLEB128(int64_t(MO.getImm()), OS);
         } else {
           encodeULEB128(uint64_t(MO.getImm()), OS);
         }