From: Andreas Schösser <andi@ipd.info.uni-karlsruhe.de>
Date: Thu, 15 Mar 2007 14:18:31 +0000 (+0000)
Subject: vector test
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=4fc98e4abadb369f33ba94abbcc056f27e69a2b3;p=libfirm

vector test
---

diff --git a/ir/be/test/vadd_store.c b/ir/be/test/vadd_store.c
new file mode 100644
index 000000000..89aa81114
--- /dev/null
+++ b/ir/be/test/vadd_store.c
@@ -0,0 +1,131 @@
+/************************************************************************
+ * Program:  vadd_store.c
+ * Function: Add 2 vectors (lying in memory) and store the result in
+ *           a another vector in memory.
+ *           Used as a test for the simd optimization.
+ * Author:   Andreas Schoesser
+ * Date:     2007-02-13
+ ************************************************************************/
+
+#include <stdio.h>
+#include <malloc.h>
+#include <stdlib.h>
+
+void vadd_store();
+//void vadd_loop();
+//void array_test(int *a[]);
+
+main()
+{
+	int a[5][5];
+	a[1][1] = 20;
+
+	printf("1. vload -> vadd -> vstore\n===================\n\n");
+//	vadd_store();
+
+	printf("2. vload -> vadd -> vstore, multi dimensional array, in loop\n==========================================\n\n");
+	vadd_loop();
+
+//	array_test(a);
+}
+
+#if 0
+void vadd_store()
+{
+	/*Also possible: Local pointers instead of function parameters: */
+	//int *a = (int *) alloca(8), *b = (int *) alloca(8), *c = (int *) alloca(8);
+	int a[2], b[2], c[2];
+	int i;
+
+	for(i = 0; i < 2; i++)
+	{
+		a[i] = rand() % 10;
+		b[i] = rand() % 10;
+	}
+
+
+/*  Also possible: Local arrays, but may be optimized so that no pattern is found
+	int a[2], b[2], c[2];	   */
+
+
+/*  Version 1: Directly adding.  */
+
+	c[0] = a[0] + b[0];
+	c[1] = a[1] + b[1];
+
+
+
+/*	Version 2: Adding of local variables
+
+	int a0, a1, b0, b1, c0, c1;
+
+	a0 = a[0];
+	a1 = a[1];
+	b0 = b[0];
+	b1 = b[1];
+
+	c0 = a0 + b0;
+	c1 = a1 + b1;
+
+	c[0] = c0;
+	c[1] = c1; */
+
+
+
+/*  Version 3: Mixed adding of locals and pointers
+
+	int a0, b1, c0;
+
+	a0 = a[0];
+	b1 = b[1];
+
+	c0 = a0 + b[0];
+	c[1] = a[1] + b1;
+
+	c[0] = c0; */
+
+	for(i = 0; i < 2; i++)
+		printf("%d + %d = %d\n", a[i], b[i], c[i]);
+	printf("\n");
+
+}
+#endif
+
+#if 1
+void vadd_loop()
+{
+
+	/* Version 4: Manually unrolled loop  */
+
+	int i, j;
+	int d[5][5], e[5][5], f[5][5];
+
+	for(j = 0; j < 4; j++)
+		for(i = 0; i < 2; i++)
+		{
+			e[j][i] = rand() % 10;
+			f[j][i] = rand() % 10;
+		}
+
+	for(j = 0; j < 4; j++)
+		//for(i = 0; i < 2; i ++ )
+	{
+		d[j][0] = e[j][0] + f[j][0];
+		d[j][1] = e[j][1] + f[j][1];
+	}
+
+	for(j = 0; j < 4; j++)
+	{
+		for(i = 0; i < 2; i++)
+			printf("%d + %d = %d\n", e[j][i], f[j][i], d[j][i]);
+		printf("\n");
+	}
+}
+#endif
+
+#if 0
+void array_test(int a[][5])
+{
+	printf("\n a[1][1]: %d\n", a[1][1]);
+}
+#endif