move dynamic 64-bit shifts into asm library calls

1 files changed, 46 insertions, 6 deletions

diff --git a/src/library.js b/src/library.js
index 62ef6db2..2daef933 100644
--- a/src/library.js
+++ b/src/library.js
@@ -4168,7 +4168,7 @@ LibraryManager.library = {
     return ret;
   },
 
-  memcpy__asm: 'true',
+  memcpy__asm: true,
   memcpy__sig: 'iiii',
   memcpy: function (dest, src, num) {
     dest = dest|0; src = src|0; num = num|0;
@@ -4329,7 +4329,7 @@ LibraryManager.library = {
     }
   },
 
-  strcpy__asm: 'true',
+  strcpy__asm: true,
   strcpy__sig: 'iii',
   strcpy: function(pdest, psrc) {
     pdest = pdest|0; psrc = psrc|0;
@@ -4350,7 +4350,7 @@ LibraryManager.library = {
     return pdest + i - 1;
   },
 
-  strncpy__asm: 'true',
+  strncpy__asm: true,
   strncpy__sig: 'iiii',
   strncpy: function(pdest, psrc, num) {
     pdest = pdest|0; psrc = psrc|0; num = num|0;
@@ -4462,7 +4462,7 @@ LibraryManager.library = {
     return 0;
   },
 
-  memcmp__asm: 'true',
+  memcmp__asm: true,
   memcmp__sig: 'iiii',
   memcmp: function(p1, p2, num) {
     p1 = p1|0; p2 = p2|0; num = num|0;
@@ -7363,7 +7363,7 @@ LibraryManager.library = {
   // i64 math
   //============================
 
-  i64Add__asm: 'true',
+  i64Add__asm: true,
   i64Add__sig: 'iiiii',
   i64Add: function(a, b, c, d) {
     /*
@@ -7380,7 +7380,7 @@ LibraryManager.library = {
     }
     {{{ makeStructuralReturn(['l|0', 'h'], true) }}};
   },
-  llvm_uadd_with_overflow_i64__asm: '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;
@@ -7393,6 +7393,46 @@ LibraryManager.library = {
     }
     {{{ makeStructuralReturn(['l|0', 'h', 'overflow'], true) }}};
   },
+
+  bitshift64Shl__asm: true,
+  bitshift64Shl__sig: 'iiii',
+  bitshift64Shl: function(low, high, bits) {
+    low = low|0; high = high|0; bits = bits|0;
+    var ander = 0;
+    ander = ((1 << bits) - 1)|0;
+    if ((bits|0) < 32) {
+      tempRet0 = (high << bits) | ((low&(ander << (32 - bits))) >>> (32 - bits));
+      return low << bits;
+    }
+    tempRet0 = low << (bits - 32);
+    return 0;
+  },
+  bitshift64Ashr__asm: true,
+  bitshift64Ashr__sig: 'iiii',
+  bitshift64Ashr: function(low, high, bits) {
+    low = low|0; high = high|0; bits = bits|0;
+    var ander = 0;
+    ander = ((1 << bits) - 1)|0;
+    if ((bits|0) < 32) {
+      tempRet0 = high >> bits;
+      return (low >>> bits) | ((high&ander) << (32 - bits));
+    }
+    tempRet0 = (high|0) < 0 ? ander : 0;
+    return (high >> (bits - 32))|0;
+  },
+  bitshift64Lshr__asm: true,
+  bitshift64Lshr__sig: 'iiii',
+  bitshift64Lshr: function(low, high, bits) {
+    low = low|0; high = high|0; bits = bits|0;
+    var ander = 0;
+    ander = ((1 << bits) - 1)|0;
+    if ((bits|0) < 32) {
+      tempRet0 = high >>> bits;
+      return (low >>> bits) | ((high&ander) << (32 - bits));
+    }
+    tempRet0 = 0;
+    return (high >>> (bits - 32))|0;
+  },
 };
 
 function autoAddDeps(object, name) {