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.dg/nrv3.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/nrv3.c (limited to 'gcc/testsuite/gcc.dg/nrv3.c') diff --git a/gcc/testsuite/gcc.dg/nrv3.c b/gcc/testsuite/gcc.dg/nrv3.c new file mode 100644 index 000000000..c28b8ec57 --- /dev/null +++ b/gcc/testsuite/gcc.dg/nrv3.c @@ -0,0 +1,35 @@ +/* Verify that gimple-level NRV is occurring when values other than the + return slot are call-clobbered. */ +/* { dg-do compile } */ +/* { dg-options "-O -fdump-tree-optimized" } */ + +#ifdef __SPU__ +/* SPU returns aggregates up to 1172 bytes in registers. */ +typedef struct { int x[300]; void *y; } S; +#else +typedef struct { int x[20]; void *y; } S; +#endif +typedef struct { int a; S b; } T; +S nrv_candidate (void); +void use_result (S, int); +int *ptr; +void foo (void) +{ + S result; + T result_arr[10][5]; + + int i; + + ptr = &i; + + /* i is call-clobbered for these calls, but result and result_arr + aren't. */ + result = nrv_candidate (); + result_arr[3][4].b = nrv_candidate (); + + use_result (result, i); + use_result (result_arr[3][4].b, i); +} + +/* { dg-final { scan-tree-dump-times "return slot optimization" 2 "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ -- cgit v1.2.3