70 lines
2.0 KiB
Diff
70 lines
2.0 KiB
Diff
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From 7e843ed8da168a05eb04eee0b14cbe681bf798fe Mon Sep 17 00:00:00 2001
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From: Lulu Cheng <chenglulu@loongson.cn>
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Date: Wed, 13 Sep 2023 11:01:34 +0800
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Subject: [PATCH 123/124] LoongArch: Change the value of branch_cost from 2 to
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6.
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gcc/ChangeLog:
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* config/loongarch/loongarch-def.c: Modify the default value of
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branch_cost.
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gcc/testsuite/ChangeLog:
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* gcc.target/loongarch/cmov_ii.c: New test.
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Signed-off-by: Peng Fan <fanpeng@loongson.cn>
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Signed-off-by: ticat_fp <fanpeng@loongson.cn>
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---
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gcc/config/loongarch/loongarch-def.c | 4 ++--
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gcc/testsuite/gcc.target/loongarch/cmov_ii.c | 15 +++++++++++++++
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2 files changed, 17 insertions(+), 2 deletions(-)
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create mode 100644 gcc/testsuite/gcc.target/loongarch/cmov_ii.c
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diff --git a/gcc/config/loongarch/loongarch-def.c b/gcc/config/loongarch/loongarch-def.c
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index d29d5f001..eeb32dbf6 100644
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--- a/gcc/config/loongarch/loongarch-def.c
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+++ b/gcc/config/loongarch/loongarch-def.c
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@@ -85,7 +85,7 @@ loongarch_cpu_align[N_TUNE_TYPES] = {
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.int_mult_di = COSTS_N_INSNS (1), \
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.int_div_si = COSTS_N_INSNS (4), \
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.int_div_di = COSTS_N_INSNS (6), \
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- .branch_cost = 2, \
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+ .branch_cost = 6, \
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.memory_latency = 4
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/* The following properties cannot be looked up directly using "cpucfg".
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@@ -118,7 +118,7 @@ loongarch_rtx_cost_optimize_size = {
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.int_mult_di = 4,
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.int_div_si = 4,
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.int_div_di = 4,
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- .branch_cost = 2,
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+ .branch_cost = 6,
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.memory_latency = 4,
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};
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diff --git a/gcc/testsuite/gcc.target/loongarch/cmov_ii.c b/gcc/testsuite/gcc.target/loongarch/cmov_ii.c
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new file mode 100644
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index 000000000..21b468e8a
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--- /dev/null
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+++ b/gcc/testsuite/gcc.target/loongarch/cmov_ii.c
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@@ -0,0 +1,15 @@
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+/* { dg-do compile } */
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+/* { dg-options "-O2" } */
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+/* { dg-final { scan-assembler "test:.*xor.*maskeqz.*masknez.*or.*" } } */
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+
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+extern void foo_ii (int *, int *, int *, int *);
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+
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+int
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+test (void)
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+{
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+ int a, b;
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+ int c, d, out;
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+ foo_ii (&a, &b, &c, &d);
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+ out = a == b ? c : d;
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+ return out;
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+}
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--
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2.33.0
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