From e43dd89d8061e68695c871f7f6b044012dfcd82b Mon Sep 17 00:00:00 2001 From: Richard Earnshaw Date: Thu, 30 Jan 2003 15:39:43 +0000 Subject: [PATCH] arm.c (arm_compute_initial_elimination_offset): If optimizing for size... * arm.c (arm_compute_initial_elimination_offset): If optimizing for size, the link register is always saved if any other register is saved. From-SVN: r62142 --- gcc/ChangeLog | 6 ++++++ gcc/config/arm/arm.c | 12 ++++++++---- 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8ba5264180c..4e7b7e8e17f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-01-30 Richard Earnshaw + + * arm.c (arm_compute_initial_elimination_offset): If optimizing for + size, the link register is always saved if any other register is + saved. + 2003-01-30 Kazu Hirata * config/h8300/h8300-protos.h: Update the prototype for diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 20ae69725a6..3a8d993af46 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -8648,10 +8648,14 @@ arm_compute_initial_elimination_offset (from, to) reg_mask = reg_mask & ~ (reg_mask & - reg_mask); } - if (regs_ever_live[LR_REGNUM] - /* If a stack frame is going to be created, the LR will - be saved as part of that, so we do not need to allow - for it here. */ + if ((regs_ever_live[LR_REGNUM] + /* If optimizing for size, then we save the link register if + any other integer register is saved. This gives a smaller + return sequence. */ + || (optimize_size && call_saved_registers > 0)) + /* But if a stack frame is going to be created, the LR will + be saved as part of that, so we do not need to allow for + it here. */ && ! frame_pointer_needed) call_saved_registers += 4; -- 2.30.2