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authorYiran Wang <yiran@google.com>2015-06-15 21:09:08 (GMT)
committerYiran Wang <yiran@google.com>2015-06-15 22:23:11 (GMT)
commit2c58169824949d3a597d9fa81931e001ef9b1bd0 (patch)
tree85da8d94e9a74c744f754df21a8a8e7e3e64be1c /gcc-4.9/gcc/testsuite
parent00eea35e8107e50c4a5f569385646ae09f4e47fc (diff)
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Update register class information when register assigned by IRA.
The update is necessary so that LRA is able to detect the conflict between these regisers and LRA registers. The change is a back-port from GCC 5.0 r217783, and please refer to gcc bug 63762 for some details. That bug report has an example, which is about VFP register file, but the issue applies to ARM integer register file too, with the same mechanism. The change is mainly about Thumb, although theoretically not limitted to. Change-Id: I1fedb410ae5ca39f168dab874f310d7337ab9bcc
Diffstat (limited to 'gcc-4.9/gcc/testsuite')
-rw-r--r--gcc-4.9/gcc/testsuite/ChangeLog5
-rw-r--r--gcc-4.9/gcc/testsuite/gcc.dg/pr63762.c77
2 files changed, 82 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/ChangeLog b/gcc-4.9/gcc/testsuite/ChangeLog
index 1881e17..4eefcba 100644
--- a/gcc-4.9/gcc/testsuite/ChangeLog
+++ b/gcc-4.9/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-19 Renlin Li <Renlin.Li@arm.com>
+
+ PR middle-end/63762
+ * gcc.dg/pr63762.c: New test.
+
2014-10-29 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* gcc.target/aarch64/madd_after_asm_1.c: New test.
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/pr63762.c b/gcc-4.9/gcc/testsuite/gcc.dg/pr63762.c
new file mode 100644
index 0000000..df11067
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/pr63762.c
@@ -0,0 +1,77 @@
+/* PR middle-end/63762 */
+/* { dg-do assemble } */
+/* { dg-options "-O2" } */
+
+#include <stdlib.h>
+
+void *astFree ();
+void *astMalloc ();
+void astNegate (void *);
+int astGetNegated (void *);
+void astGetRegionBounds (void *, double *, double *);
+int astResampleF (void *, ...);
+
+extern int astOK;
+
+int
+MaskF (int inside, int ndim, const int lbnd[], const int ubnd[],
+ float in[], float val)
+{
+
+ void *used_region;
+ float *c, *d, *out, *tmp_out;
+ double *lbndgd, *ubndgd;
+ int *lbndg, *ubndg, idim, ipix, nax, nin, nout, npix, npixg, result = 0;
+ if (!astOK) return result;
+ lbndg = astMalloc (sizeof (int)*(size_t) ndim);
+ ubndg = astMalloc (sizeof (int)*(size_t) ndim);
+ lbndgd = astMalloc (sizeof (double)*(size_t) ndim);
+ ubndgd = astMalloc (sizeof (double)*(size_t) ndim);
+ if (astOK)
+ {
+ astGetRegionBounds (used_region, lbndgd, ubndgd);
+ npix = 1;
+ npixg = 1;
+ for (idim = 0; idim < ndim; idim++)
+ {
+ lbndg[ idim ] = lbnd[ idim ];
+ ubndg[ idim ] = ubnd[ idim ];
+ npix *= (ubnd[ idim ] - lbnd[ idim ] + 1);
+ if (npixg >= 0) npixg *= (ubndg[ idim ] - lbndg[ idim ] + 1);
+ }
+ if (npixg <= 0 && astOK)
+ {
+ if ((inside != 0) == (astGetNegated( used_region ) != 0))
+ {
+ c = in;
+ for (ipix = 0; ipix < npix; ipix++) *(c++) = val;
+ result = npix;
+ }
+ }
+ else if (npixg > 0 && astOK)
+ {
+ if ((inside != 0) == (astGetNegated (used_region) != 0))
+ {
+ tmp_out = astMalloc (sizeof (float)*(size_t) npix);
+ if (tmp_out)
+ {
+ c = tmp_out;
+ for (ipix = 0; ipix < npix; ipix++) *(c++) = val;
+ result = npix - npixg;
+ }
+ out = tmp_out;
+ }
+ else
+ {
+ tmp_out = NULL;
+ out = in;
+ }
+ if (inside) astNegate (used_region);
+ result += astResampleF (used_region, ndim, lbnd, ubnd, in, NULL,
+ NULL, NULL, 0, 0.0, 100, val, ndim,
+ lbnd, ubnd, lbndg, ubndg, out, NULL);
+ if (inside) astNegate (used_region);
+ }
+ }
+ return result;
+}