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authorRichard Henderson <richard.henderson@linaro.org>2023-10-29 14:08:38 -0700
committerRichard Henderson <richard.henderson@linaro.org>2023-11-06 08:27:21 -0800
commitecfa1877f7e9d300b57492552afed2932ed954d7 (patch)
tree6e314dac7da1b5a96699c10601e452f233e8accd /tcg
parent6046f6e94d8d530ecc28176232479889abbee47e (diff)
tcg: Mark tcg_gen_op* as noinline
Encourage the compiler to tail-call rather than inline across the dozens of opcode expanders. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231029210848.78234-2-richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/tcg-op.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 828eb9ee46..9aed19e957 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -31,20 +31,26 @@
#include "tcg-internal.h"
-void tcg_gen_op1(TCGOpcode opc, TCGArg a1)
+/*
+ * Encourage the compiler to tail-call to a function, rather than inlining.
+ * Minimizes code size across 99 bottles of beer on the wall.
+ */
+#define NI __attribute__((noinline))
+
+void NI tcg_gen_op1(TCGOpcode opc, TCGArg a1)
{
TCGOp *op = tcg_emit_op(opc, 1);
op->args[0] = a1;
}
-void tcg_gen_op2(TCGOpcode opc, TCGArg a1, TCGArg a2)
+void NI tcg_gen_op2(TCGOpcode opc, TCGArg a1, TCGArg a2)
{
TCGOp *op = tcg_emit_op(opc, 2);
op->args[0] = a1;
op->args[1] = a2;
}
-void tcg_gen_op3(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3)
+void NI tcg_gen_op3(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3)
{
TCGOp *op = tcg_emit_op(opc, 3);
op->args[0] = a1;
@@ -52,7 +58,7 @@ void tcg_gen_op3(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3)
op->args[2] = a3;
}
-void tcg_gen_op4(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3, TCGArg a4)
+void NI tcg_gen_op4(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3, TCGArg a4)
{
TCGOp *op = tcg_emit_op(opc, 4);
op->args[0] = a1;
@@ -61,8 +67,8 @@ void tcg_gen_op4(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3, TCGArg a4)
op->args[3] = a4;
}
-void tcg_gen_op5(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3,
- TCGArg a4, TCGArg a5)
+void NI tcg_gen_op5(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3,
+ TCGArg a4, TCGArg a5)
{
TCGOp *op = tcg_emit_op(opc, 5);
op->args[0] = a1;
@@ -72,8 +78,8 @@ void tcg_gen_op5(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3,
op->args[4] = a5;
}
-void tcg_gen_op6(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3,
- TCGArg a4, TCGArg a5, TCGArg a6)
+void NI tcg_gen_op6(TCGOpcode opc, TCGArg a1, TCGArg a2, TCGArg a3,
+ TCGArg a4, TCGArg a5, TCGArg a6)
{
TCGOp *op = tcg_emit_op(opc, 6);
op->args[0] = a1;