Use andn for band_not when bmi1 is present (#5701)

We can use the andn instruction for the lowering of band_not on x64 when bmi1 is available.
2023-02-03 16:23:18 -08:00
parent 0ba1448fa4
commit 6d8f2be9e1
7 changed files with 141 additions and 3 deletions
--- a/cranelift/filetests/filetests/runtests/bnot.clif
+++ b/cranelift/filetests/filetests/runtests/bnot.clif
@@ -1,6 +1,7 @@
 test interpret
 test run
 target x86_64
+target x86_64 has_bmi1
 target aarch64
 target s390x

@@ -65,4 +66,4 @@ block0(v0: i8, v1: i8):

 ; run: %bxor_not(0xFF, 0) == 0
 ; run: %bxor_not(0x55, 0xFF) == 85
-; run: %bxor_not(0, 0) == -1
+; run: %bxor_not(0, 0) == -1