From e549dd44b5ff0547004a640554ebe55f1ce2936b Mon Sep 17 00:00:00 2001 From: Luo Xiong Hu Date: Mon, 2 Dec 2019 01:59:26 +0000 Subject: [PATCH] PR92398: Fix testcase failure of pr72804.c P9LE generated instruction is not worse than P8LE. mtvsrdd;xxlnot;stxv vs. not;not;std;std. It can have longer latency, but latency via memory is not so critical, and this does save decode and other resources. It's hard to choose which is best. Update the test case to fix failures. gcc/testsuite/ChangeLog: 2019-12-02 Luo Xiong Hu PR testsuite/92398 * gcc.target/powerpc/pr72804.c: Split the store function to... * gcc.target/powerpc/pr92398.h: ... this one. New. * gcc.target/powerpc/pr92398.p9+.c: New. * gcc.target/powerpc/pr92398.p9-.c: New. * lib/target-supports.exp (check_effective_target_p8): New. (check_effective_target_p9+): New. From-SVN: r278890 --- gcc/testsuite/ChangeLog | 10 ++++++++++ gcc/testsuite/gcc.target/powerpc/pr72804.c | 19 ++++-------------- gcc/testsuite/gcc.target/powerpc/pr92398.h | 17 ++++++++++++++++ .../gcc.target/powerpc/pr92398.p9+.c | 12 +++++++++++ .../gcc.target/powerpc/pr92398.p9-.c | 10 ++++++++++ gcc/testsuite/lib/target-supports.exp | 20 +++++++++++++++++++ 6 files changed, 73 insertions(+), 15 deletions(-) create mode 100644 gcc/testsuite/gcc.target/powerpc/pr92398.h create mode 100644 gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c create mode 100644 gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 34d5a75a200..d4990527244 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,13 @@ +2019-12-02 Luo Xiong Hu + + testsuite/pr92398 + * gcc.target/powerpc/pr72804.c: Split the store function to... + * gcc.target/powerpc/pr92398.h: ... this one. New. + * gcc.target/powerpc/pr92398.p9+.c: New. + * gcc.target/powerpc/pr92398.p9-.c: New. + * lib/target-supports.exp (check_effective_target_p8): New. + (check_effective_target_p9+): New. + 2019-11-30 Richard Sandiford * gcc.target/aarch64/sve/acle/general-c/sizeless-1.c: New test. diff --git a/gcc/testsuite/gcc.target/powerpc/pr72804.c b/gcc/testsuite/gcc.target/powerpc/pr72804.c index 56a2452885e..d424bccd5c3 100644 --- a/gcc/testsuite/gcc.target/powerpc/pr72804.c +++ b/gcc/testsuite/gcc.target/powerpc/pr72804.c @@ -1,7 +1,6 @@ /* { dg-do compile { target { lp64 } } } */ -/* { dg-skip-if "" { powerpc*-*-darwin* } } */ /* { dg-require-effective-target powerpc_vsx_ok } */ -/* { dg-options "-O2 -mvsx -fno-inline-functions --param max-inline-insns-single=200" } */ +/* { dg-options "-O2 -mvsx"} */ __int128_t foo (__int128_t *src) @@ -9,17 +8,7 @@ foo (__int128_t *src) return ~*src; } -void -bar (__int128_t *dst, __int128_t src) -{ - *dst = ~src; -} -/* { dg-final { scan-assembler-times "not " 4 } } */ -/* { dg-final { scan-assembler-times "std " 2 } } */ -/* { dg-final { scan-assembler-times "ld " 2 } } */ -/* { dg-final { scan-assembler-not "lxvd2x" } } */ -/* { dg-final { scan-assembler-not "stxvd2x" } } */ -/* { dg-final { scan-assembler-not "xxpermdi" } } */ -/* { dg-final { scan-assembler-not "mfvsrd" } } */ -/* { dg-final { scan-assembler-not "mfvsrd" } } */ +/* { dg-final { scan-assembler-times {\mld\M} 2 } } */ +/* { dg-final { scan-assembler-times {\mnot\M} 2 } } */ +/* { dg-final { scan-assembler-not {\mlxvd2x\M} } }*/ diff --git a/gcc/testsuite/gcc.target/powerpc/pr92398.h b/gcc/testsuite/gcc.target/powerpc/pr92398.h new file mode 100644 index 00000000000..5a4a8bcab80 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr92398.h @@ -0,0 +1,17 @@ +/* This test code is included into pr92398.p9-.c and pr92398.p9+.c. + The two files have the tests for the number of instructions generated for + P9- versus P9+. + + store generates difference instructions as below: + P9+: mtvsrdd;xxlnot;stxv. + P8/P7/P6 LE: not;not;std;std. + P8 BE: mtvsrd;mtvsrd;xxpermdi;xxlnor;stxvd2x. + P7/P6 BE: std;std;addi;lxvd2x;xxlnor;stxvd2x. + P9+ and P9- LE are expected, P6/P7/P8 BE are unexpected. */ + +void +bar (__int128_t *dst, __int128_t src) +{ + *dst = ~src; +} + diff --git a/gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c b/gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c new file mode 100644 index 00000000000..a819c3f16af --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr92398.p9+.c @@ -0,0 +1,12 @@ +/* { dg-do compile { target { lp64 && p9+ } } } */ +/* { dg-require-effective-target powerpc_vsx_ok } */ +/* { dg-options "-O2 -mvsx" } */ + +/* { dg-final { scan-assembler-times {\mmtvsrdd\M} 1 } } */ +/* { dg-final { scan-assembler-times {\mxxlnor\M} 1 } } */ +/* { dg-final { scan-assembler-times {\mstxv\M} 1 } } */ +/* { dg-final { scan-assembler-not {\mld\M} } } */ +/* { dg-final { scan-assembler-not {\mnot\M} } } */ + +/* Source code for the test in pr92398.h */ +#include "pr92398.h" diff --git a/gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c b/gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c new file mode 100644 index 00000000000..065ae73f267 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr92398.p9-.c @@ -0,0 +1,10 @@ +/* { dg-do compile { target { lp64 && {! p9+} } } } */ +/* { dg-require-effective-target powerpc_vsx_ok } */ +/* { dg-options "-O2 -mvsx" } */ + +/* { dg-final { scan-assembler-times {\mnot\M} 2 { xfail be } } } */ +/* { dg-final { scan-assembler-times {\mstd\M} 2 { xfail { p8 && be } } } } */ + +/* Source code for the test in pr92398.h */ +#include "pr92398.h" + diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index 8f25d331270..5b4cc02f921 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -2585,6 +2585,26 @@ proc check_effective_target_le { } { }] } +# Return 1 if we're generating code for only power8 platforms. + +proc check_effective_target_p8 { } { + return [check_no_compiler_messages_nocache p8 assembly { + #if !(!defined(_ARCH_PWR9) && defined(_ARCH_PWR8)) + #error NO + #endif + } ""] +} + +# Return 1 if we're generating code for power9 and future platforms. + +proc check_effective_target_p9+ { } { + return [check_no_compiler_messages_nocache p9+ assembly { + #if !(defined(_ARCH_PWR9)) + #error NO + #endif + } ""] +} + # Return 1 if we're generating 32-bit code using default options, 0 # otherwise. -- 2.30.2