From 9ad2ba6e8e7fc195d0dd0b76ab38bd2fceb1bdd4 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sat, 14 Jan 2023 13:32:06 -1000 Subject: target/i386: Fix BZHI instruction We did not correctly handle N >= operand size. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1374 Signed-off-by: Richard Henderson Message-Id: <20230114233206.3118472-1-richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini --- tests/tcg/i386/test-i386-bmi2.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tests') diff --git a/tests/tcg/i386/test-i386-bmi2.c b/tests/tcg/i386/test-i386-bmi2.c index 982d4ab..0244df7 100644 --- a/tests/tcg/i386/test-i386-bmi2.c +++ b/tests/tcg/i386/test-i386-bmi2.c @@ -123,6 +123,9 @@ int main(int argc, char *argv[]) { result = bzhiq(mask, 0x1f); assert(result == (mask & ~(-1 << 30))); + result = bzhiq(mask, 0x40); + assert(result == mask); + result = rorxq(0x2132435465768798, 8); assert(result == 0x9821324354657687); -- cgit v1.1