diff options
Diffstat (limited to 'src/library.js')
| -rw-r--r-- | src/library.js | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/src/library.js b/src/library.js index 12e550ff..0f8b0af5 100644 --- a/src/library.js +++ b/src/library.js @@ -5206,13 +5206,6 @@ LibraryManager.library = { {{{ makeStructuralReturn(['(x*y)>>>0', 'x*y > 4294967295']) }}}; }, - llvm_uadd_with_overflow_i64__deps: [function() { Types.preciseI64MathUsed = 1 }], - llvm_uadd_with_overflow_i64: function(xl, xh, yl, yh) { - i64Math.add(xl, xh, yl, yh); - {{{ makeStructuralReturn([makeGetTempDouble(0, 'i32'), makeGetTempDouble(1, 'i32'), '0']) }}}; - // XXX Need to hack support for second param in long.js - }, - llvm_umul_with_overflow_i64__deps: [function() { Types.preciseI64MathUsed = 1 }], llvm_umul_with_overflow_i64: function(xl, xh, yl, yh) { i64Math.multiply(xl, xh, yl, yh); @@ -7352,6 +7345,41 @@ LibraryManager.library = { Module.print(intArrayToString(__formatString(_emscripten_jcache_printf_.buffer, varargs + i*4)).replace('\\n', '')); Runtime.stackAlloc(-4*i); // free up the stack space we know is ok to free }, + + //============================ + // i64 math + //============================ + + i64Add__asm: 'true', + i64Add__sig: 'iiiii', + i64Add: function(a, b, c, d) { + /* + x = a + b*2^32 + y = c + d*2^32 + result = l + h*2^32 + */ + a = a|0; b = b|0; c = c|0; d = d|0; + var l = 0, h = 0; + l = (a + c)>>>0; + h = (b + d)>>>0; + if ((l>>>0) < (a>>>0)) { // iff we overflowed + h = (h+1)>>>0; + } + {{{ makeStructuralReturn(['l|0', 'h'], true) }}}; + }, + llvm_uadd_with_overflow_i64__asm: 'true', + llvm_uadd_with_overflow_i64__sig: 'iiiii', + llvm_uadd_with_overflow_i64: function(a, b, c, d) { + a = a|0; b = b|0; c = c|0; d = d|0; + var l = 0, h = 0, overflow = 0; + l = (a + c)>>>0; + h = (b + d)>>>0; + if ((l>>>0) < (a>>>0)) { // iff we overflowed + h = (h+1)>>>0; + overflow = 1; + } + {{{ makeStructuralReturn(['l|0', 'h', 'overflow'], true) }}}; + }, }; function autoAddDeps(object, name) { |