Enable more CLIF tests on AArch64

The tests for the SIMD floating-point maximum and minimum operations
require particular care because the handling of the NaN values is
non-deterministic and may vary between platforms. There is no way to
match several NaN values in a test, so the solution is to extract the
non-deterministic test cases into a separate file that is subsequently
replicated for every backend under test, with adjustments made to the
expected results.

Copyright (c) 2021, Arm Limited.

cranelift/filetests/filetests/simple_preopt/bitselect.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 ;; Test replacement of bitselect with vselect for special masks

cranelift/filetests/filetests/simple_preopt/branch.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 function %icmp_to_brz_fold(i32) -> i32 {

cranelift/filetests/filetests/simple_preopt/div_by_const_indirect.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64 baseline
 
 ; Cases where the denominator is created by an iconst

cranelift/filetests/filetests/simple_preopt/div_by_const_non_power_of_2.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target i686 baseline
 
 ; -------- U32 --------

cranelift/filetests/filetests/simple_preopt/div_by_const_power_of_2.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target i686 baseline
 
 ; -------- U32 --------

cranelift/filetests/filetests/simple_preopt/do_not_reorder_instructions_when_transplanting.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 ;; Test that although v5 can be replaced with v1, we don't transplant `load.i32

cranelift/filetests/filetests/simple_preopt/fold-extended-move-wraparound.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 function %wraparound(i64 vmctx) -> f32 system_v {

cranelift/filetests/filetests/simple_preopt/rem_by_const_non_power_of_2.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target i686 baseline
 
 ; -------- U32 --------

cranelift/filetests/filetests/simple_preopt/rem_by_const_power_of_2.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target i686 baseline
 
 ; -------- U32 --------

cranelift/filetests/filetests/simple_preopt/replace_branching_instructions_and_cfg_predecessors.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 function u0:2(i64 , i64) {

cranelift/filetests/filetests/simple_preopt/sign_extend.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 ;; Tests for sign-extending immediates.

cranelift/filetests/filetests/simple_preopt/simplify32.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target i686
 
 ;; 32-bits platforms.

cranelift/filetests/filetests/simple_preopt/simplify64.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 ;; 64-bits platforms.

cranelift/filetests/filetests/simple_preopt/simplify_instruction_into_alias_of_value.clif

@@ -1,4 +1,5 @@
 test simple_preopt
+target aarch64
 target x86_64
 
 ;; The `isub` is a no-op, but we can't replace the whole `isub` instruction with