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Stylistic cleanups, no functional change.

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- Use static functions instead of anonymous namespace.
- Appease the Doxygen lobby.
- Use 0-based induction variable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185185 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2013-06-28 18:33:19 +00:00
parent d7648ff20f
commit a45b375610
1 changed files with 7 additions and 10 deletions
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17
lib/Support/BlockFrequency.cpp
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@ -18,10 +18,8 @@
using namespace llvm;
namespace {
/// mult96bit - Multiply FREQ by N and store result in W array.
void mult96bit(uint64_t freq, uint32_t N, uint64_t W[2]) {
/// Multiply FREQ by N and store result in W array.
static void mult96bit(uint64_t freq, uint32_t N, uint64_t W[2]) {
uint64_t u0 = freq & UINT32_MAX;
uint64_t u1 = freq >> 32;
@ -42,15 +40,15 @@ void mult96bit(uint64_t freq, uint32_t N, uint64_t W[2]) {
}
/// div96bit - Divide 96-bit value stored in W array by D.
/// Divide 96-bit value stored in W array by D.
/// Return 64-bit quotient, saturated to UINT64_MAX on overflow.
uint64_t div96bit(uint64_t W[2], uint32_t D) {
static uint64_t div96bit(uint64_t W[2], uint32_t D) {
uint64_t y = W[0];
uint64_t x = W[1];
int i;
unsigned i;
// This long division algorithm automatically saturates on overflow.
for (i = 1; i <= 64 && x; ++i) {
for (i = 0; i < 64 && x; ++i) {
uint32_t t = (int)x >> 31;
x = (x << 1) | (y >> 63);
y = y << 1;
@ -60,10 +58,9 @@ uint64_t div96bit(uint64_t W[2], uint32_t D) {
}
}
return y << (64 - i + 1);
return y << (64 - i);
}
}
void BlockFrequency::scale(uint32_t N, uint32_t D) {
assert(D != 0 && "Division by zero");