commit 0690d442ab9ddb78e3d72ba6ec252e48fbd659eb
author Reid Spencer <rspencer@reidspencer.com> Thu Feb 08 00:29:31 2007 +0000
committer Reid Spencer <rspencer@reidspencer.com> Thu Feb 08 00:29:31 2007 +0000
tree e1ed6eb2c406b4189ea44671541dc7215991856c
parent 709750c3d36ee98b71d90832a916c767b57553a2

For PR1188:
Compute BitMask correctly.

Patch by Leo (wenwenti@hotmail.com).

llvm-svn: 34026

llvm/lib/ExecutionEngine/Interpreter/Execution.cpp

diff --git a/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp b/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
index 565915b..fe80dfd 100644
--- a/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -1307,7 +1307,7 @@
 
 #define INTEGER_ASSIGN(DEST, BITWIDTH, VAL)     \
   {                                             \
-    uint64_t Mask = (1ull << BITWIDTH) - 1;     \
+    uint64_t Mask = ~(uint64_t)(0ull) >> (64-BITWIDTH);     \
     if (BITWIDTH == 1) {                        \
       Dest.Int1Val = (bool) (VAL & Mask);       \
     } else if (BITWIDTH <= 8) {                 \