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| author | Richard Kenner <kenner@gcc.gnu.org> | 1993-07-05 17:43:43 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1993-07-05 17:43:43 -0400 |
| commit | 6dd0c6da729705dee361873dcc0f05bca888d2e8 (patch) | |
| tree | 307aa710a9a72e9f81955579a1dcd8ebc9900d80 /gcc | |
| parent | 2a73b0b200cd9da3076d46f4689d29e6361a2015 (diff) | |
| download | gcc-6dd0c6da729705dee361873dcc0f05bca888d2e8.zip gcc-6dd0c6da729705dee361873dcc0f05bca888d2e8.tar.gz gcc-6dd0c6da729705dee361873dcc0f05bca888d2e8.tar.bz2 | |
(movhi): When storing a constant in an HImode register...
(movhi): When storing a constant in an HImode register, use cal16
instead of cal so that the high bits are clear (combine requires
this).
From-SVN: r4845
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/romp/romp.md | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/config/romp/romp.md b/gcc/config/romp/romp.md index 4bdb503..968f700 100644 --- a/gcc/config/romp/romp.md +++ b/gcc/config/romp/romp.md @@ -1,5 +1,5 @@ ;;- Machine description for ROMP chip for GNU C compiler -;; Copyright (C) 1988, 1991 Free Software Foundation, Inc. +;; Copyright (C) 1988, 1991, 1993 Free Software Foundation, Inc. ;; Contributed by Richard Kenner (kenner@nyu.edu) ;; This file is part of GNU CC. @@ -335,6 +335,10 @@ "loadha %0,%1" [(set_attr "type" "load")]) + +;; use cal16 instead of cal for constant source because combine requires +;; the high bits of the register to be 0 after a HImode load of a constant + (define_insn "" [(set (match_operand:HI 0 "reg_or_nonsymb_mem_operand" "=r,r,r,r,r,b,Q") (match_operand:HI 1 "romp_operand" "r,I,n,s,Q,m,r"))] @@ -343,7 +347,7 @@ "@ cas %0,%1,r0 lis %0,%1 - cal %0,%L1(r0) + cal16 %0,%L1(r0) get %0,$%1 lh%N1 %0,%1 loadh %0,%1 |