bpabi.S (__aeabi_ldivmod): Optimise stack manipulation.

2014-06-18  Charles Baylis  <charles.baylis@linaro.org>

	* config/arm/bpabi.S (__aeabi_ldivmod): Optimise stack manipulation.

From-SVN: r211793

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2083ffaca0b125b6ed8333cc169bd2d18c8e15fb..fec83a5883e647de1119eaec4665c03824689c39 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2014-06-18  Charles Baylis  <charles.baylis@linaro.org>
+
+       * config/arm/bpabi.S (__aeabi_ldivmod): Optimise stack manipulation.
+
 2014-06-18  Charles Baylis  <charles.baylis@linaro.org>
 
        * config/arm/bpabi.S (__aeabi_uldivmod): Perform division using call

diff --git a/libgcc/config/arm/bpabi.S b/libgcc/config/arm/bpabi.S
index 927e37ffd1418b5ae8febb82f91784ce2aab5c6b..3f9ece58ba089860cdab94f438fcf6995acae1a4 100644 (file)
--- a/libgcc/config/arm/bpabi.S
+++ b/libgcc/config/arm/bpabi.S
@@ -174,18 +174,10 @@ ARM_FUNC_START aeabi_ldivmod
        cfi_start       __aeabi_ldivmod, LSYM(Lend_aeabi_ldivmod)
        test_div_by_zero        signed
 
-       sub     sp, sp, #8
-#if defined(__thumb2__)
-       mov     ip, sp
-       push    {ip, lr}
-#else
-       do_push {sp, lr}
-#endif
-98:    cfi_push 98b - __aeabi_ldivmod, 0xe, -0xc, 0x10
+       push_for_divide __aeabi_ldivmod
+       /* arguments in (r0:r1), (r2:r3) and *sp */
        bl      SYM(__gnu_ldivmod_helper) __PLT__
-       ldr     lr, [sp, #4]
-       add     sp, sp, #8
-       do_pop  {r2, r3}
+       pop_for_divide
        RET
        cfi_end LSYM(Lend_aeabi_ldivmod)