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/mips/ins-2.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 gcc/testsuite/gcc.target/mips/ins-2.c (limited to 'gcc/testsuite/gcc.target/mips/ins-2.c') diff --git a/gcc/testsuite/gcc.target/mips/ins-2.c b/gcc/testsuite/gcc.target/mips/ins-2.c new file mode 100644 index 000000000..a71e6c053 --- /dev/null +++ b/gcc/testsuite/gcc.target/mips/ins-2.c @@ -0,0 +1,27 @@ +/* { dg-do compile } */ +/* { dg-options "-O -meb isa_rev>=2 -mgp64" } */ +/* { dg-final { scan-assembler-times "\tins\t|\tdins\t" 1 } } */ +/* { dg-final { scan-assembler-times "\tsll\t|\tins\t" 1 } } */ + +/* When inserting something into the top bit of a 32-bit structure, + we must make sure that the register remains properly sign-extended. + There are two ways of doing this: + + - use purely 32-bit bit manipulations (a single INS, matched twice here). + - use a 64-bit bit manipulation (DINS), and sign-extend the result. We + check for this extension using SLL. */ + +struct s +{ + int a:3; + int b:29; +}; + +NOMIPS16 void +f (int a) +{ + struct s s; + asm volatile ("" : "=r"(s)); + s.a = a; + asm volatile ("" :: "r"(s)); +} -- cgit v1.2.3