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disable alignment altogether outside of the platforms which potentially have SSE or AltiVec

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This should remove most portability issues to other platforms where data alignment issues (including
overloading operator new and new[]) can be tricky, and where data alignment is not needed in the first place.
This commit is contained in:
Benoit Jacob
2009-02-04 16:53:03 +00:00
parent c26dc9ab1b
commit 93a089adc8
3 changed files with 62 additions and 65 deletions
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28
test/dynalloc.cpp
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@@ -24,12 +24,18 @@
#include "main.h"
#if EIGEN_ARCH_WANTS_ALIGNMENT
#define ALIGNMENT 16
#else
#define ALIGNMENT 1
#endif
void check_handmade_aligned_malloc()
{
for(int i = 1; i < 1000; i++)
{
char *p = (char*)ei_handmade_aligned_malloc(i);
VERIFY(size_t(p)%16==0);
VERIFY(size_t(p)%ALIGNMENT==0);
// if the buffer is wrongly allocated this will give a bad write --> check with valgrind
for(int j = 0; j < i; j++) p[j]=0;
ei_handmade_aligned_free(p);
@@ -41,7 +47,7 @@ void check_aligned_malloc()
for(int i = 1; i < 1000; i++)
{
char *p = (char*)ei_aligned_malloc(i);
VERIFY(size_t(p)%16==0);
VERIFY(size_t(p)%ALIGNMENT==0);
// if the buffer is wrongly allocated this will give a bad write --> check with valgrind
for(int j = 0; j < i; j++) p[j]=0;
ei_aligned_free(p);
@@ -53,7 +59,7 @@ void check_aligned_new()
for(int i = 1; i < 1000; i++)
{
float *p = ei_aligned_new<float>(i);
VERIFY(size_t(p)%16==0);
VERIFY(size_t(p)%ALIGNMENT==0);
// if the buffer is wrongly allocated this will give a bad write --> check with valgrind
for(int j = 0; j < i; j++) p[j]=0;
ei_aligned_delete(p,i);
@@ -65,7 +71,7 @@ void check_aligned_stack_alloc()
for(int i = 1; i < 1000; i++)
{
float *p = ei_aligned_stack_new(float,i);
VERIFY(size_t(p)%16==0);
VERIFY(size_t(p)%ALIGNMENT==0);
// if the buffer is wrongly allocated this will give a bad write --> check with valgrind
for(int j = 0; j < i; j++) p[j]=0;
ei_aligned_stack_delete(float,p,i);
@@ -92,7 +98,7 @@ class MyClassA
template<typename T> void check_dynaligned()
{
T* obj = new T;
VERIFY(size_t(obj)%16==0);
VERIFY(size_t(obj)%ALIGNMENT==0);
delete obj;
}
@@ -115,15 +121,15 @@ void test_dynalloc()
// check static allocation, who knows ?
{
MyStruct foo0; VERIFY(size_t(foo0.avec.data())%16==0);
MyClassA fooA; VERIFY(size_t(fooA.avec.data())%16==0);
MyStruct foo0; VERIFY(size_t(foo0.avec.data())%ALIGNMENT==0);
MyClassA fooA; VERIFY(size_t(fooA.avec.data())%ALIGNMENT==0);
}
// dynamic allocation, single object
for (int i=0; i<g_repeat*100; ++i)
{
MyStruct *foo0 = new MyStruct(); VERIFY(size_t(foo0->avec.data())%16==0);
MyClassA *fooA = new MyClassA(); VERIFY(size_t(fooA->avec.data())%16==0);
MyStruct *foo0 = new MyStruct(); VERIFY(size_t(foo0->avec.data())%ALIGNMENT==0);
MyClassA *fooA = new MyClassA(); VERIFY(size_t(fooA->avec.data())%ALIGNMENT==0);
delete foo0;
delete fooA;
}
@@ -132,8 +138,8 @@ void test_dynalloc()
const int N = 10;
for (int i=0; i<g_repeat*100; ++i)
{
MyStruct *foo0 = new MyStruct[N]; VERIFY(size_t(foo0->avec.data())%16==0);
MyClassA *fooA = new MyClassA[N]; VERIFY(size_t(fooA->avec.data())%16==0);
MyStruct *foo0 = new MyStruct[N]; VERIFY(size_t(foo0->avec.data())%ALIGNMENT==0);
MyClassA *fooA = new MyClassA[N]; VERIFY(size_t(fooA->avec.data())%ALIGNMENT==0);
delete[] foo0;
delete[] fooA;
}