From a7adf08e8429685a68f3b2629806ff2c03e781a5 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Thu, 11 Mar 1999 06:01:27 -0800 Subject: [PATCH] alpha.h (HARD_REGNO_MODE_OK): Disallow QI/HImode in fp regs. * alpha.h (HARD_REGNO_MODE_OK): Disallow QI/HImode in fp regs. (MODES_TIEABLE_P): Update. From-SVN: r25704 --- gcc/ChangeLog | 5 +++++ gcc/config/alpha/alpha.h | 12 +++++++----- 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 85ae797c53e..21a9c221a83 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Thu Mar 11 14:00:58 1999 Richard Henderson + + * alpha.h (HARD_REGNO_MODE_OK): Disallow QI/HImode in fp regs. + (MODES_TIEABLE_P): Update. + Thu Mar 11 13:55:52 1999 Richard Henderson * machmode.h (smallest_mode_for_size): Prototype. diff --git a/gcc/config/alpha/alpha.h b/gcc/config/alpha/alpha.h index f5ab13bb1a6..3e119a70afd 100644 --- a/gcc/config/alpha/alpha.h +++ b/gcc/config/alpha/alpha.h @@ -620,18 +620,20 @@ extern void override_options (); /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. On Alpha, the integer registers can hold any mode. The floating-point registers can hold 32-bit and 64-bit integers as well, but not 16-bit - or 8-bit values. If we only allowed the larger integers into FP registers, - we'd have to say that QImode and SImode aren't tiable, which is a - pain. So say all registers can hold everything and see how that works. */ + or 8-bit values. */ -#define HARD_REGNO_MODE_OK(REGNO, MODE) 1 +#define HARD_REGNO_MODE_OK(REGNO, MODE) \ + ((REGNO) < 32 || ((MODE) != QImode && (MODE) != HImode)) /* Value is 1 if it is a good idea to tie two pseudo registers when one has mode MODE1 and one has mode MODE2. If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, for any hard reg, then this must be 0 for correct output. */ -#define MODES_TIEABLE_P(MODE1, MODE2) 1 +#define MODES_TIEABLE_P(MODE1, MODE2) \ + ((MODE1) == QImode || (MODE1) == HImode \ + ? (MODE2) == QImode || (MODE2) == HImode \ + : 1) /* Specify the registers used for certain standard purposes. The values of these macros are register numbers. */ -- 2.30.2