https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90545
Bug ID: 90545
Summary: [10 regression]
gcc.target/powerpc/fold-vec-splats-floatdouble.c fails
starting with r271022
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: seurer at gcc dot gnu.org
Target Milestone: ---
This happens on just power 9.
spawn -ignore SIGHUP /home3/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home3/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/gcc/testsuite/gcc.target/powerpc/fold-vec-splats-floatdouble.c
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -mvsx -O1 -ffat-lto-objects -fno-ident -S -o
fold-vec-splats-floatdouble.s
PASS: gcc.target/powerpc/fold-vec-splats-floatdouble.c (test for excess errors)
gcc.target/powerpc/fold-vec-splats-floatdouble.c: xxpermdi found 0 times
FAIL: gcc.target/powerpc/fold-vec-splats-floatdouble.c scan-assembler-times
xxpermdi 1
PASS: gcc.target/powerpc/fold-vec-splats-floatdouble.c scan-assembler-times
\\mxscvdpspn?\\M 1
PASS: gcc.target/powerpc/fold-vec-splats-floatdouble.c scan-assembler-times
\\mvspltw\\M|\\mxxspltw\\M 1
test1f before r271022:
test1f:
.LFB1:
.cfi_startproc
xxpermdi 34,1,1,0
blr
After r271022:
test1f:
.LFB1:
.cfi_startproc
mfvsrd 9,1
mtvsrdd 34,9,9
blr
gcc.target/powerpc/fold-vec-splats-floatdouble.c:
/* Verify that overloaded built-ins for vec_splat with float and
double inputs for VSX produce the right code. */
/* { dg-do compile } */
/* { dg-require-effective-target powerpc_vsx_ok } */
/* { dg-options "-mvsx -O1" } */
#include <altivec.h>
vector float
test1d (float x)
{
return vec_splats (x);
}
vector double
test1f (double x)
{
return vec_splats (x);
}
// float test generates the permute instruction.
/* { dg-final { scan-assembler-times "xxpermdi" 1 } } */
// double test generates a convert (double to single non-signalling) followed
by a splat.
/* { dg-final { scan-assembler-times {\mxscvdpspn?\M} 1 } } */
/* { dg-final { scan-assembler-times {\mvspltw\M|\mxxspltw\M} 1 } } */
