[AArch64][GlobalISel] Update and cleanup a number of gisel tests. NFC

Mostly removing unnecessary -global-isel-abort=2 or adding fallback messages

Author: davemgreen

llvm/test/CodeGen/AArch64/abs.ll

@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
 ; RUN: llc -mtriple=aarch64-none-linux-gnu %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SD
-; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel -global-isel-abort=2 %s -o - 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-GI
+; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-GI
 
 ; ===== Legal Scalars =====
 

llvm/test/CodeGen/AArch64/arm64-clrsb.ll

@@ -1,78 +1,68 @@
-; RUN: llc < %s -mtriple=arm64-apple-ios7.0.0 |  FileCheck %s
-; RUN: llc < %s -mtriple=arm64-apple-ios7.0.0 -O0 -pass-remarks-missed=gisel* -global-isel-abort=2 |  FileCheck %s --check-prefixes=GISEL,FALLBACK
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=arm64-apple-ios7.0.0 |  FileCheck %s --check-prefixes=CHECK,CHECK-SD
+; RUN: llc < %s -mtriple=arm64-apple-ios7.0.0 -global-isel |  FileCheck %s --check-prefixes=CHECK,CHECK-GI
 
 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
 
-; Function Attrs: nounwind readnone
 declare i32 @llvm.ctlz.i32(i32, i1) #0
 declare i64 @llvm.ctlz.i64(i64, i1) #1
 
-; Function Attrs: nounwind ssp
-; FALLBACK-NOT: remark{{.*}}clrsb32
 define i32 @clrsb32(i32 %x) #2 {
+; CHECK-LABEL: clrsb32:
+; CHECK:       ; %bb.0: ; %entry
+; CHECK-NEXT:    cls w0, w0
+; CHECK-NEXT:    ret
 entry:
   %shr = ashr i32 %x, 31
   %xor = xor i32 %shr, %x
   %mul = shl i32 %xor, 1
   %add = or i32 %mul, 1
   %0 = tail call i32 @llvm.ctlz.i32(i32 %add, i1 false)
-
   ret i32 %0
-; CHECK-LABEL: clrsb32
-; CHECK:   cls [[TEMP:w[0-9]+]], [[TEMP]]
-
-; GISEL-LABEL: clrsb32
-; GISEL: cls [[TEMP:w[0-9]+]], [[TEMP]]
 }
 
-; Function Attrs: nounwind ssp
-; FALLBACK-NOT: remark{{.*}}clrsb64
 define i64 @clrsb64(i64 %x) #3 {
+; CHECK-LABEL: clrsb64:
+; CHECK:       ; %bb.0: ; %entry
+; CHECK-NEXT:    cls x0, x0
+; CHECK-NEXT:    ret
 entry:
   %shr = ashr i64 %x, 63
   %xor = xor i64 %shr, %x
   %mul = shl nsw i64 %xor, 1
   %add = or i64 %mul, 1
   %0 = tail call i64 @llvm.ctlz.i64(i64 %add, i1 false)
-
   ret i64 %0
-; CHECK-LABEL: clrsb64
-; CHECK:   cls [[TEMP:x[0-9]+]], [[TEMP]]
-; GISEL-LABEL: clrsb64
-; GISEL:   cls [[TEMP:x[0-9]+]], [[TEMP]]
 }
 
-; Function Attrs: nounwind ssp
-; FALLBACK-NOT: remark{{.*}}clrsb32_zeroundef
 define i32 @clrsb32_zeroundef(i32 %x) #2 {
+; CHECK-LABEL: clrsb32_zeroundef:
+; CHECK:       ; %bb.0: ; %entry
+; CHECK-NEXT:    cls w0, w0
+; CHECK-NEXT:    ret
 entry:
   %shr = ashr i32 %x, 31
   %xor = xor i32 %shr, %x
   %mul = shl i32 %xor, 1
   %add = or i32 %mul, 1
   %0 = tail call i32 @llvm.ctlz.i32(i32 %add, i1 true)
-
   ret i32 %0
-; CHECK-LABEL: clrsb32_zeroundef
-; CHECK:   cls [[TEMP:w[0-9]+]], [[TEMP]]
-
-; GISEL-LABEL: clrsb32_zeroundef
-; GISEL: cls [[TEMP:w[0-9]+]], [[TEMP]]
 }
 
-; Function Attrs: nounwind ssp
-; FALLBACK-NOT: remark{{.*}}clrsb64
 define i64 @clrsb64_zeroundef(i64 %x) #3 {
+; CHECK-LABEL: clrsb64_zeroundef:
+; CHECK:       ; %bb.0: ; %entry
+; CHECK-NEXT:    cls x0, x0
+; CHECK-NEXT:    ret
 entry:
   %shr = ashr i64 %x, 63
   %xor = xor i64 %shr, %x
   %mul = shl nsw i64 %xor, 1
   %add = or i64 %mul, 1
   %0 = tail call i64 @llvm.ctlz.i64(i64 %add, i1 true)
-
   ret i64 %0
-; CHECK-LABEL: clrsb64_zeroundef
-; CHECK:   cls [[TEMP:x[0-9]+]], [[TEMP]]
-; GISEL-LABEL: clrsb64_zeroundef
-; GISEL:   cls [[TEMP:x[0-9]+]], [[TEMP]]
 }
+
+;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
+; CHECK-GI: {{.*}}
+; CHECK-SD: {{.*}}