Fix SICORTEX ASUM/ZASUM and SUM/ZSUM for INCX <=0 (#4640)

martin-frbg · web-flow · commit 4c03ed437f3a · 2024-04-14T15:39:11.000+02:00
* Exit early if INCX &lt;= 0
diff --git a/kernel/mips64/asum.S b/kernel/mips64/asum.S
@@ -73,6 +73,7 @@
 	MTC	$0,  s1
 
 	MTC	$0,  s2
+	blez	INCX, .L999
 	dsll	INCX, INCX, BASE_SHIFT
 
 	blez	N, .L999
diff --git a/kernel/mips64/sum.S b/kernel/mips64/sum.S
@@ -73,6 +73,7 @@
 	MTC	$0,  s1
 
 	MTC	$0,  s2
+	blez	INCX, .L999
 	dsll	INCX, INCX, BASE_SHIFT
 
 	blez	N, .L999
diff --git a/kernel/mips64/zasum.S b/kernel/mips64/zasum.S
@@ -73,6 +73,7 @@
 	MTC	$0,  s1
 
 	MTC	$0,  s2
+	blez    INCX, .L999
 	dsll	INCX, INCX, ZBASE_SHIFT
 
 	blez	N, .L999
diff --git a/kernel/mips64/zsum.S b/kernel/mips64/zsum.S
@@ -73,6 +73,7 @@
 	MTC	$0,  s1
 
 	MTC	$0,  s2
+	blez    INCX, .L999
 	dsll	INCX, INCX, ZBASE_SHIFT
 
 	blez	N, .L999
