riscv: fix more sign/zero-extension problems

see the testcase. For the signed case this problably does the wrong thing, and it should break other archs. Rework once there are testcases for this.

Michael Matz committed 7 years ago

Commit 509f5611 parent 1ada3292 files · +14 −7Browse files

Unified · Split

2 files

                     lexpand();
                     vpop();
 #else
-                    /* XXX some architectures (e.g. risc-v) would like it
+                    if (dbt & VT_UNSIGNED) {
-                       better for this merely being a 32-to-64 sign or zero-
+                        /* XXX some architectures (e.g. risc-v) would like it
-                       extension.  */
+                           better for this merely being a 32-to-64 sign or zero-
-		    vpushi(0xffffffff);
+                           extension.  */
-		    vtop->type.t |= VT_UNSIGNED;
+                        vpushi(0xffffffff);
-		    gen_op('&');
+                        vtop->type.t |= VT_UNSIGNED;
+                        gen_op('&');
+                    } else {
+                    }
 #endif
                 }
                 /* if lvalue and single word type, nothing to do because
 	        vtop->c.f = -1.0 * 0.0;
 	    else if (t == VT_DOUBLE)
 	        vtop->c.d = -1.0 * 0.0;
-	    else
+            else
 	        vtop->c.ld = -1.0 * 0.0;
 	} else
 	    vpushi(0);

     unsigned b,d;
     short s;
     char *p = NULL;
+    unsigned long ul = 0x80000000UL;
     p -= 0x700000000042;
     printf("cast_test:\n");
     /* from integers to pointers */
     printf("%p %p %p %p\n",
            (void *)a, (void *)b, (void *)c, (void *)d);
+    /* int to int with sign set */
+    printf("0x%lx\n", (unsigned long)(int)ul);
 }
 /* initializers tests */

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