From 2cd5a89bc4820a66d6acb164a572587a7a47deca Mon Sep 17 00:00:00 2001 From: Bill Schmidt Date: Mon, 7 Oct 2019 20:50:05 +0000 Subject: [PATCH] backport: re PR target/91275 (__builtin_crypto_vpmsumd gives different results -O[123] vs -O0) [gcc] 2019-10-07 Bill Schmidt Backport from mainline 2019-10-01 Bill Schmidt PR target/91275 * config/rs6000/rs6000.c (rtx_is_swappable_p): Don't swap vpmsumd. [gcc/testsuite] 2019-10-07 Bill Schmidt Backport from mainline 2019-10-01 Bill Schmidt PR target/91275 * gcc.target/powerpc/pr91275.c: New. From-SVN: r276678 --- gcc/ChangeLog | 9 +++++++++ gcc/config/rs6000/rs6000.c | 5 +++++ gcc/testsuite/ChangeLog | 8 ++++++++ gcc/testsuite/gcc.target/powerpc/pr91275.c | 21 +++++++++++++++++++++ 4 files changed, 43 insertions(+) create mode 100644 gcc/testsuite/gcc.target/powerpc/pr91275.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 94bc2305576d..0c20c87f20a5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2019-10-07 Bill Schmidt + + Backport from mainline + 2019-10-01 Bill Schmidt + + PR target/91275 + * config/rs6000/rs6000.c (rtx_is_swappable_p): Don't swap + vpmsumd. + 2019-10-01 Oleg Endo Backport from mainline diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 7a374cfd58c4..b6e62a2f65d5 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -42005,6 +42005,11 @@ rtx_is_swappable_p (rtx op, unsigned int *special) case UNSPEC_REDUC_PLUS: case UNSPEC_REDUC: return 1; + case UNSPEC_VPMSUM: + /* vpmsumd is not swappable, but vpmsum[bhw] are. */ + if (GET_MODE (op) == V2DImode) + return 0; + break; } } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 7a748e6406a1..8287648d245d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,11 @@ +2019-10-07 Bill Schmidt + + Backport from mainline + 2019-10-01 Bill Schmidt + + PR target/91275 + * gcc.target/powerpc/pr91275.c: New. + 2019-09-28 Iain Sandoe PR target/82920 diff --git a/gcc/testsuite/gcc.target/powerpc/pr91275.c b/gcc/testsuite/gcc.target/powerpc/pr91275.c new file mode 100644 index 000000000000..b23d75be29b4 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr91275.c @@ -0,0 +1,21 @@ +/* Test that we generate vpmsumd correctly without a swap error. */ + +/* { dg-do run { target { p8vector_hw } } } */ +/* { dg-options "-O2 -std=gnu11" } */ + +#include + +int main() { + + const unsigned long long r0l = 0x8e7dfceac070e3a0; + vector unsigned long long r0 = (vector unsigned long long) {r0l, 0}, v; + const vector unsigned long long pd + = (vector unsigned long) {0xc2LLU << 56, 0}; + + v = __builtin_crypto_vpmsumd ((vector unsigned long long) {r0[0], 0}, pd); + + if (v[0] != 0x4000000000000000 || v[1] != 0x65bd7ab605a4a8ff) + __builtin_abort (); + + return 0; +} -- 2.47.2