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[3/5] ARCv2: entry: avoid a branch

Message ID 1558121528-30184-4-git-send-email-vgupta@synopsys.com
State New
Headers show
Series Rewrite ARCv2 interrupt/expecption entry code | expand

Commit Message

Vineet Gupta May 17, 2019, 7:32 p.m. UTC 
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
 arch/arc/include/asm/entry-arcv2.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
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Patch

diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h
index 3209a6762960..beaf655666cb 100644
--- a/arch/arc/include/asm/entry-arcv2.h
+++ b/arch/arc/include/asm/entry-arcv2.h
@@ -100,12 +100,11 @@ 
 	; 2. Upon entry SP is always saved (for any inspection, unwinding etc),
 	;    but on return, restored only if U mode
 
+	lr	r9, [AUX_USER_SP]			; U mode SP
+
 	mov.nz	r9, sp
 	add.nz	r9, r9, SZ_PT_REGS - PT_sp - 4		; K mode SP
-	bnz	1f
 
-	lr	r9, [AUX_USER_SP]			; U mode SP
-1:
 	PUSH	r9					; SP (pt_regs->sp)
 
 	PUSH	fp