Module Name: src
Committed By: rin
Date: Sat Oct 7 12:10:38 UTC 2023
Modified Files:
src/external/gpl3/gcc.old/dist/gcc/config/vax: vax.md
Log Message:
gcc.old: vax: PR port-vax/57646 patch provided by Kalvis Duckmanton [20/21]
If in PIC mode, and the source operand to extv is a memory reference, and th
e address of the memory location is an external symbol, load the address into a
temporary register before expanding the instruction.
To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 \
src/external/gpl3/gcc.old/dist/gcc/config/vax/vax.md
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/gpl3/gcc.old/dist/gcc/config/vax/vax.md
diff -u src/external/gpl3/gcc.old/dist/gcc/config/vax/vax.md:1.16 src/external/gpl3/gcc.old/dist/gcc/config/vax/vax.md:1.17
--- src/external/gpl3/gcc.old/dist/gcc/config/vax/vax.md:1.16 Sat Oct 7 12:10:18 2023
+++ src/external/gpl3/gcc.old/dist/gcc/config/vax/vax.md Sat Oct 7 12:10:38 2023
@@ -982,7 +982,40 @@
""
"cmpzv %2,%1,%0,%3")
-(define_insn "extv"
+(define_expand "extv"
+ [(set (match_operand:SI 0 "general_operand" "")
+ (sign_extract:SI (match_dup 4)
+ (match_operand:QI 2 "general_operand" "")
+ (match_operand:SI 3 "general_operand" ""))
+ )]
+ ""
+ "{
+ /*
+ * If the source operand is a memory reference, and the address
+ * is a symbol, and we're in PIC mode, load the address into a
+ * register. Don't evaluate the field start or width at this time.
+ */
+ operands[4] = operands[1];
+ if (flag_pic
+ /* && !reload_completed */
+ && MEM_P (operands[1])
+ && !mode_dependent_address_p (XEXP (operands[1], 0),
+ MEM_ADDR_SPACE (operands[1]))
+ && SYMBOL_REF_P (XEXP (operands[1], 0))
+ && !SYMBOL_REF_LOCAL_P (XEXP (operands[1], 0))
+ )
+ {
+ rtx address = XEXP (operands[1], 0);
+ rtx temp = gen_reg_rtx (Pmode);
+ emit_move_insn (temp, address);
+ /* copy the original memory reference, replacing the address */
+ operands[4] = change_address (operands[1], VOIDmode, temp);
+ set_mem_align (operands[4], MEM_ALIGN (operands[1]));
+ }
+ }"
+)
+
+(define_insn ""
[(set (match_operand:SI 0 "nonimmediate_operand" "=g")
(sign_extract:SI (match_operand:QI 1 "memory_operand" "m")
(match_operand:QI 2 "general_operand" "g")
