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| author | Richard Kenner <kenner@gcc.gnu.org> | 1996-09-29 19:05:36 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1996-09-29 19:05:36 -0400 |
| commit | 754fdcca7a6c812a0917ca6cb4a79a2e3e32c897 (patch) | |
| tree | e1dd07e9fff581cdcb78bd4df3cf19e93b686a34 | |
| parent | 50dc6373e56ad31b2fca259589d4282b7abb5598 (diff) | |
| download | gcc-754fdcca7a6c812a0917ca6cb4a79a2e3e32c897.zip gcc-754fdcca7a6c812a0917ca6cb4a79a2e3e32c897.tar.gz gcc-754fdcca7a6c812a0917ca6cb4a79a2e3e32c897.tar.bz2 | |
(mark_user_reg): New function.
From-SVN: r12869
| -rw-r--r-- | gcc/emit-rtl.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index aaebc6f..522b95f 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -540,6 +540,23 @@ gen_reg_rtx (mode) return val; } +/* Identify REG (which may be a CONCAT) as a user register. */ + +void +mark_user_reg (reg) + rtx reg; +{ + if (GET_CODE (reg) == CONCAT) + { + REG_USERVAR_P (XEXP (reg, 0)) = 1; + REG_USERVAR_P (XEXP (reg, 1)) = 1; + } + else if (GET_CODE (reg) == REG) + REG_USERVAR_P (reg) = 1; + else + abort (); +} + /* Identify REG as a probable pointer register and show its alignment as ALIGN, if nonzero. */ |