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authorRichard Henderson <richard.henderson@linaro.org>2023-01-14 13:32:06 -1000
committerPaolo Bonzini <pbonzini@redhat.com>2023-02-27 09:18:55 +0100
commit9ad2ba6e8e7fc195d0dd0b76ab38bd2fceb1bdd4 (patch)
tree339144bbb157fe61573bcfa576af2385d253fed4 /tests
parent1270a3f57c9221080f3205a15964814ff8359ca9 (diff)
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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 <richard.henderson@linaro.org> Message-Id: <20230114233206.3118472-1-richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tests')
-rw-r--r--tests/tcg/i386/test-i386-bmi2.c3
1 files changed, 3 insertions, 0 deletions
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);