[gcc r12-10623] alpha: Fix duplicate !tlsgd!62 assemble error [PR115526]

[Uros Bizjak via Gcc-cvs]

https://gcc.gnu.org/g:c5a26fc24b0af61498fae65ccad69d51d63d2a8b

commit r12-10623-gc5a26fc24b0af61498fae65ccad69d51d63d2a8b
Author: Uros Bizjak <ubiz...@gmail.com>
Date:   Wed Jul 17 18:11:26 2024 +0200

    alpha: Fix duplicate !tlsgd!62 assemble error [PR115526]
    
    Add missing "cannot_copy" attribute to instructions that have to
    stay in 1-1 correspondence with another insn.
    
            PR target/115526
    
    gcc/ChangeLog:
    
            * config/alpha/alpha.md (movdi_er_high_g): Add cannot_copy 
attribute.
            (movdi_er_tlsgd): Ditto.
            (movdi_er_tlsldm): Ditto.
            (call_value_osf_<tls>): Ditto.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/alpha/pr115526.c: New test.
    
    (cherry picked from commit 0841fd4c42ab053be951b7418233f0478282d020)

Diff:
---
 gcc/config/alpha/alpha.md                 | 10 +++++--
 gcc/testsuite/gcc.target/alpha/pr115526.c | 46 +++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+), 3 deletions(-)

diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md
index 442953fe50e1..b6795e1d2638 100644
--- a/gcc/config/alpha/alpha.md
+++ b/gcc/config/alpha/alpha.md
@@ -3933,7 +3933,8 @@
   else
     return "ldq %0,%2(%1)\t\t!literal!%3";
 }
-  [(set_attr "type" "ldsym")])
+  [(set_attr "type" "ldsym")
+   (set_attr "cannot_copy" "true")])
 
 (define_split
   [(set (match_operand:DI 0 "register_operand")
@@ -3957,7 +3958,8 @@
     return "lda %0,%2(%1)\t\t!tlsgd";
   else
     return "lda %0,%2(%1)\t\t!tlsgd!%3";
-})
+}
+  [(set_attr "cannot_copy" "true")])
 
 (define_insn "movdi_er_tlsldm"
   [(set (match_operand:DI 0 "register_operand" "=r")
@@ -3970,7 +3972,8 @@
     return "lda %0,%&(%1)\t\t!tlsldm";
   else
     return "lda %0,%&(%1)\t\t!tlsldm!%2";
-})
+}
+  [(set_attr "cannot_copy" "true")])
 
 (define_insn "*movdi_er_gotdtp"
   [(set (match_operand:DI 0 "register_operand" "=r")
@@ -5939,6 +5942,7 @@
   "HAVE_AS_TLS"
   "ldq $27,%1($29)\t\t!literal!%2\;jsr $26,($27),%1\t\t!lituse_<tls>!%2\;ldah 
$29,0($26)\t\t!gpdisp!%*\;lda $29,0($29)\t\t!gpdisp!%*"
   [(set_attr "type" "jsr")
+   (set_attr "cannot_copy" "true")
    (set_attr "length" "16")])
 
 ;; We must use peep2 instead of a split because we need accurate life
diff --git a/gcc/testsuite/gcc.target/alpha/pr115526.c 
b/gcc/testsuite/gcc.target/alpha/pr115526.c
new file mode 100644
index 000000000000..2f57903fec34
--- /dev/null
+++ b/gcc/testsuite/gcc.target/alpha/pr115526.c
@@ -0,0 +1,46 @@
+/* PR target/115526 */
+/* { dg-do assemble } */
+/* { dg-options "-O2 -Wno-attributes -fvisibility=hidden -fPIC -mcpu=ev4" } */
+
+struct _ts {
+  struct _dtoa_state *interp;
+};
+struct Bigint {
+  int k;
+} *_Py_dg_strtod_bs;
+struct _dtoa_state {
+  struct Bigint p5s;
+  struct Bigint *freelist[];
+};
+extern _Thread_local struct _ts _Py_tss_tstate;
+typedef struct Bigint Bigint;
+int pow5mult_k;
+long _Py_dg_strtod_ndigits;
+void PyMem_Free();
+void Bfree(Bigint *v) {
+  if (v)
+    {
+      if (v->k)
+       PyMem_Free();
+      else {
+       struct _dtoa_state *interp = _Py_tss_tstate.interp;
+       interp->freelist[v->k] = v;
+      }
+    }
+}
+static Bigint *pow5mult(Bigint *b) {
+  for (;;) {
+    if (pow5mult_k & 1) {
+      Bfree(b);
+      if (b == 0)
+        return 0;
+    }
+    if (!(pow5mult_k >>= 1))
+      break;
+  }
+  return 0;
+}
+void _Py_dg_strtod() {
+  if (_Py_dg_strtod_ndigits)
+    pow5mult(_Py_dg_strtod_bs);
+}