Pre-commit test

Author: AZero13

llvm/test/CodeGen/AArch64/fast-isel-O0-cmp

@@ -0,0 +1,38 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=aarch64-linux-gnu -O0 -fast-isel -fast-isel-abort=1 -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK
+
+; even in -O0, cmp should be cmp
+define i1 @cmp(i32 %0) {
+; CHECK-LABEL: cmp:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    subs w8, w0, #5
+; CHECK-NEXT:    cset w0, gt
+; CHECK-NEXT:    // kill: def $w1 killed $w0
+; CHECK-NEXT:    ret
+  %2 = icmp sgt i32 %0, 5
+  ret i1 %2
+}
+
+define i1 @cmn(i32 %0) {
+; CHECK-LABEL: cmn:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    adds w8, w0, #5
+; CHECK-NEXT:    cset w0, gt
+; CHECK-NEXT:    // kill: def $w1 killed $w0
+; CHECK-NEXT:    ret
+  %2 = icmp sgt i32 %0, -5
+  ret i1 %2
+}
+
+; Test that 0 is cmp
+define i1 @cmp0(i32 %0) {
+; CHECK-LABEL: cmp0:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    subs w8, w0, #0
+; CHECK-NEXT:    cset w0, gt
+; CHECK-NEXT:    // kill: def $w1 killed $w0
+; CHECK-NEXT:    ret
+  %2 = icmp sgt i32 %0, 0
+  ret i1 %2
+}
+