commit d73685e3c3936fd7851a32eff5443405cb5368be
author Stefan Weil <sw@weilnetz.de> Thu Sep 13 19:37:45 2012 +0200
committer Aurelien Jarno <aurelien@aurel32.net> Sat Sep 22 16:52:37 2012 +0200
tree 498d837fd59471c535d58f2ed39b383f688c0dc8
parent b18212c66870f119111e0777fcc19462ae07eb70

tcg/i386: Remove unused registers from tcg_target_call_iarg_regs

32 bit x86 hosts don't need registers for helper function arguments
because they use the default stack based calling convention.

Removing the registers allows simpler code for function
tcg_target_get_call_iarg_regs_count.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

tcg/i386/tcg-target.c

diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index a87c8ba..43c9719 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -75,9 +75,7 @@
     TCG_REG_R8,
     TCG_REG_R9,
 #else
-    TCG_REG_EAX,
-    TCG_REG_EDX,
-    TCG_REG_ECX
+    /* 32 bit mode uses stack based calling convention (GCC default). */
 #endif
 };
 
@@ -129,11 +127,7 @@
 /* maximum number of register used for input function arguments */
 static inline int tcg_target_get_call_iarg_regs_count(int flags)
 {
-    if (TCG_TARGET_REG_BITS == 64) {
-        return ARRAY_SIZE(tcg_target_call_iarg_regs);
-    }
-
-    return 0;
+    return ARRAY_SIZE(tcg_target_call_iarg_regs);
 }
 
 /* parse target specific constraints */