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Merge pull request #596 from litghost/make_clang_format

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Run "make clangformat" to fix formatting in new Bits library.
This commit is contained in:
gatecat 2021-02-23 22:49:35 +00:00 committed by GitHub
commit 5de1978632
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 11 deletions
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14
common/bits.cc
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@ -24,7 +24,8 @@
namespace nextpnr {
int Bits::generic_popcount(unsigned int v) {
int Bits::generic_popcount(unsigned int v)
{
unsigned int c; // c accumulates the total bits set in v
for (c = 0; v; c++) {
v &= v - 1; // clear the least significant bit set
@ -33,13 +34,14 @@ int Bits::generic_popcount(unsigned int v) {
return c;
}
int Bits::generic_ctz(unsigned int x) {
if(x == 0) {
int Bits::generic_ctz(unsigned int x)
{
if (x == 0) {
throw std::runtime_error("Cannot call ctz with arg = 0");
}
for(size_t i = 0; i < std::numeric_limits<unsigned int>::digits; ++i) {
if((x & (1 << i)) != 0) {
for (size_t i = 0; i < std::numeric_limits<unsigned int>::digits; ++i) {
if ((x & (1 << i)) != 0) {
return i;
}
}
@ -48,4 +50,4 @@ int Bits::generic_ctz(unsigned int x) {
throw std::runtime_error("Unreachable!");
}
};
}; // namespace nextpnr

13
common/bits.h
View File

@ -34,18 +34,20 @@
#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
#include <intrin.h>
#pragma intrinsic(_BitScanForward,_BitScanReverse,__popcnt)
#pragma intrinsic(_BitScanForward, _BitScanReverse, __popcnt)
#endif
// Uses plain nextpnr namespace to avoid header inclusion nightmare that is
// "nextpnr.h".
namespace nextpnr {
struct Bits {
struct Bits
{
static int generic_popcount(unsigned int x);
static int generic_ctz(unsigned int x);
static int popcount(unsigned int x) {
static int popcount(unsigned int x)
{
#if defined(__GNUC__) || defined(__clang__)
return __builtin_popcount(x);
#elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
@ -55,7 +57,8 @@ struct Bits {
#endif
}
static int ctz(unsigned int x) {
static int ctz(unsigned int x)
{
#if defined(__GNUC__) || defined(__clang__)
return __builtin_ctz(x);
#elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86))
@ -68,6 +71,6 @@ struct Bits {
}
};
};
}; // namespace nextpnr
#endif /* BITS_H */