From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.target/arm/frame-pointer-1.c | 42 ++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 gcc/testsuite/gcc.target/arm/frame-pointer-1.c (limited to 'gcc/testsuite/gcc.target/arm/frame-pointer-1.c') diff --git a/gcc/testsuite/gcc.target/arm/frame-pointer-1.c b/gcc/testsuite/gcc.target/arm/frame-pointer-1.c new file mode 100644 index 000000000..bb1888e38 --- /dev/null +++ b/gcc/testsuite/gcc.target/arm/frame-pointer-1.c @@ -0,0 +1,42 @@ +/* Check local register variables using a register conventionally + used as the frame pointer aren't clobbered under high register pressure. */ +/* { dg-do run } */ +/* { dg-options "-Os -mthumb -fomit-frame-pointer" } */ + +#include + +int global=5; + +void __attribute__((noinline)) foo(int p1, int p2, int p3, int p4) +{ + if (global != 5 || p1 != 1 || p2 != 2 || p3 != 3 || p4 != 4) + abort(); +} + +int __attribute__((noinline)) test(int a, int b, int c, int d) +{ + register unsigned long r __asm__("r7") = 0xdeadbeef; + int e; + + /* ABCD are live after the call which should be enough + to cause r7 to be used if it weren't for the register variable. */ + foo(a,b,c,d); + + e = 0; + __asm__ __volatile__ ("mov %0, %2" + : "=r" (e) + : "0" (e), "r" (r)); + + global = a+b+c+d; + + return e; +} + +int main() +{ + if (test(1, 2, 3, 4) != 0xdeadbeef) + abort(); + if (global != 10) + abort(); + return 0; +} -- cgit v1.2.3