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Fix the carry in addition.
author
Reid Spencer
<rspencer@reidspencer.com>
Wed, 21 Feb 2007 05:44:56 +0000
(
05:44
+0000)
committer
Reid Spencer
<rspencer@reidspencer.com>
Wed, 21 Feb 2007 05:44:56 +0000
(
05:44
+0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34465
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Support/APInt.cpp
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diff --git
a/lib/Support/APInt.cpp
b/lib/Support/APInt.cpp
index 27be51ce4d96935dc513f6b9da3696bac1b6804a..ae7cc439d3d9287bb2dfe51d8e51d5d57713700c 100644
(file)
--- a/
lib/Support/APInt.cpp
+++ b/
lib/Support/APInt.cpp
@@
-192,9
+192,9
@@
APInt& APInt::operator--() {
static uint64_t add(uint64_t dest[], uint64_t x[], uint64_t y[], uint32_t len) {
uint64_t carry = 0;
for (uint32_t i = 0; i< len; ++i) {
- uint64_t save = std::max(x[i],y[i]);
dest[i] = x[i] + y[i] + carry;
- carry = dest[i] < save ? 1 : 0;
+ uint64_t limit = std::min(x[i],y[i]);
+ carry = dest[i] < limit || (carry && dest[i] == limit);
}
return carry;
}