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

* Exit early if INCX <= 0
martin-frbg · Apr 14, 2024 · 4c03ed4 · 4c03ed4
1 parent 23d5a8b
commit 4c03ed4
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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