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gcc: add a patch to generate better code with Os on mips

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Also happens to reduce compressed code size a bit

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau
2016-08-04 20:29:45 +02:00
parent 7c874d18f5
commit ecf7671b76
2 changed files with 25 additions and 0 deletions
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14
toolchain/gcc/patches/5.4.0/300-mips_Os_cpu_rtx_cost_model.patch Normal file
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@@ -0,0 +1,14 @@
Use the proper rtx cost model for the selected CPU, even when optimizing
for size. This generates better code.
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -17483,7 +17483,7 @@ mips_option_override (void)
flag_pcc_struct_return = 0;
/* Decide which rtx_costs structure to use. */
- if (optimize_size)
+ if (0 && optimize_size)
mips_cost = &mips_rtx_cost_optimize_size;
else
mips_cost = &mips_rtx_cost_data[mips_tune];

11
toolchain/gcc/patches/6.1.0/300-mips_Os_cpu_rtx_cost_model.patch Normal file
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@@ -0,0 +1,11 @@
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -17928,7 +17928,7 @@ mips_option_override (void)
flag_pcc_struct_return = 0;
/* Decide which rtx_costs structure to use. */
- if (optimize_size)
+ if (0 && optimize_size)
mips_cost = &mips_rtx_cost_optimize_size;
else
mips_cost = &mips_rtx_cost_data[mips_tune];