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authorRichard Henderson <richard.henderson@linaro.org>2020-12-09 13:58:39 -0600
committerRichard Henderson <richard.henderson@linaro.org>2021-01-07 05:09:06 -1000
commit07ce0b05300de5bc8f1932a4cfbe38f3323e5ab1 (patch)
treea22f2b213b2cb96c8e0e30c69bca9edb00b678bc /tcg/optimize.c
parentd2ef1b83a7a2047e0e36d7b62b3a5d151ab958f5 (diff)
downloadfocaccia-qemu-07ce0b05300de5bc8f1932a4cfbe38f3323e5ab1.tar.gz
focaccia-qemu-07ce0b05300de5bc8f1932a4cfbe38f3323e5ab1.zip
tcg: Introduce INDEX_op_qemu_st8_i32
Enable this on i386 to restrict the set of input registers
for an 8-bit store, as required by the architecture.  This
removes the last use of scratch registers for user-only mode.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/optimize.c')
-rw-r--r--tcg/optimize.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 7ca71de956..1fb42eb2a9 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -1541,6 +1541,7 @@ void tcg_optimize(TCGContext *s)
             case INDEX_op_qemu_ld_i32:
             case INDEX_op_qemu_ld_i64:
             case INDEX_op_qemu_st_i32:
+            case INDEX_op_qemu_st8_i32:
             case INDEX_op_qemu_st_i64:
             case INDEX_op_call:
                 /* Opcodes that touch guest memory stop the optimization.  */