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. --- .../mips/loongson-shift-count-truncated-1.c | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 gcc/testsuite/gcc.target/mips/loongson-shift-count-truncated-1.c (limited to 'gcc/testsuite/gcc.target/mips/loongson-shift-count-truncated-1.c') diff --git a/gcc/testsuite/gcc.target/mips/loongson-shift-count-truncated-1.c b/gcc/testsuite/gcc.target/mips/loongson-shift-count-truncated-1.c new file mode 100644 index 000000000..be52cf7de --- /dev/null +++ b/gcc/testsuite/gcc.target/mips/loongson-shift-count-truncated-1.c @@ -0,0 +1,35 @@ +/* Test case for SHIFT_COUNT_TRUNCATED on Loongson. */ + +/* { dg-do run } */ +/* loongson.h does not handle or check for MIPS16ness. There doesn't + seem any good reason for it to, given that the Loongson processors + do not support MIPS16. */ +/* { dg-options "isa=loongson -mhard-float -mno-mips16 -O1" } */ + +#include "loongson.h" +#include + +typedef union { int32x2_t v; int32_t a[2]; } int32x2_encap_t; + +void +main1 (int shift) +{ + int32x2_encap_t s; + int32x2_encap_t r; + + s.a[0] = 0xffffffff; + s.a[1] = 0xffffffff; + /* Loongson SIMD use low-order 7 bits to specify the shift amount. + Thus V2SI << 0x40 == 0. The below expression 'shift & 0x3f' will be + mis-optimized as 'shift', if SHIFT_COUNT_TRUNCATED is nonzero. */ + r.v = psllw_s (s.v, (shift & 0x3f)); + assert (r.a[0] == 0xffffffff); + assert (r.a[1] == 0xffffffff); +} + +int +main (void) +{ + main1 (0x40); + return 0; +} -- cgit v1.2.3