diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/asm2wasm.h | 13 | ||||
| -rw-r--r-- | src/emscripten-optimizer/parser.cpp | 1 | ||||
| -rw-r--r-- | src/emscripten-optimizer/parser.h | 1 |
3 files changed, 12 insertions, 3 deletions
diff --git a/src/asm2wasm.h b/src/asm2wasm.h index 910134024..1aca67eff 100644 --- a/src/asm2wasm.h +++ b/src/asm2wasm.h @@ -202,6 +202,8 @@ private: IString Math_ceil; IString Math_sqrt; + IString llvm_cttz_i32; + IString tempDoublePtr; // imported name of tempDoublePtr // function types. we fill in this information as we see @@ -486,10 +488,15 @@ void Asm2WasmBuilder::processAsm(Ref ast) { assert(module[0] == NAME); moduleName = module[1]->getIString(); if (moduleName == ENV) { - if (imported[2] == TEMP_DOUBLE_PTR) { + auto base = imported[2]->getIString(); + if (base == TEMP_DOUBLE_PTR) { assert(tempDoublePtr.isNull()); tempDoublePtr = name; // we don't return here, as we can only optimize out some uses of tDP. So it remains imported + } else if (base == LLVM_CTTZ_I32) { + assert(llvm_cttz_i32.isNull()); + llvm_cttz_i32 = name; + return; } } } @@ -1092,10 +1099,10 @@ Function* Asm2WasmBuilder::processFunction(Ref ast) { ret->type = WasmType::i32; return ret; } - if (name == Math_clz32) { + if (name == Math_clz32 || name == llvm_cttz_i32) { assert(ast[2]->size() == 1); auto ret = allocator.alloc<Unary>(); - ret->op = Clz; + ret->op = name == Math_clz32 ? Clz : Ctz; ret->value = process(ast[2][0]); ret->type = WasmType::i32; return ret; diff --git a/src/emscripten-optimizer/parser.cpp b/src/emscripten-optimizer/parser.cpp index 7005dc4b4..ce4737476 100644 --- a/src/emscripten-optimizer/parser.cpp +++ b/src/emscripten-optimizer/parser.cpp @@ -48,6 +48,7 @@ IString TOPLEVEL("toplevel"), INF("inf"), NaN("nan"), TEMP_RET0("tempRet0"), + LLVM_CTTZ_I32("_llvm_cttz_i32"), UNARY_PREFIX("unary-prefix"), UNARY_POSTFIX("unary-postfix"), MATH_FROUND("Math_fround"), diff --git a/src/emscripten-optimizer/parser.h b/src/emscripten-optimizer/parser.h index da3e6f5c7..e10044fbc 100644 --- a/src/emscripten-optimizer/parser.h +++ b/src/emscripten-optimizer/parser.h @@ -63,6 +63,7 @@ extern IString TOPLEVEL, INF, NaN, TEMP_RET0, + LLVM_CTTZ_I32, UNARY_PREFIX, UNARY_POSTFIX, MATH_FROUND, |