[NFC][SCEV] Add tests for @llvm.abs intrinsic

diff --git a/llvm/test/Analysis/ScalarEvolution/abs-intrinsic.ll b/llvm/test/Analysis/ScalarEvolution/abs-intrinsic.ll
new file mode 100644 (file)
index 0000000..daf8460
--- /dev/null
+++ b/llvm/test/Analysis/ScalarEvolution/abs-intrinsic.ll
@@ -0,0 +1,27 @@
+; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
+; RUN: opt -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s
+; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
+
+declare i32 @llvm.abs.i32(i32, i1)
+
+define i32 @abs_nonsw(i32 %x) {
+; CHECK-LABEL: 'abs_nonsw'
+; CHECK-NEXT:  Classifying expressions for: @abs_nonsw
+; CHECK-NEXT:    %r = call i32 @llvm.abs.i32(i32 %x, i1 false)
+; CHECK-NEXT:    --> %r U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @abs_nonsw
+;
+  %r = call i32 @llvm.abs.i32(i32 %x, i1 0)
+  ret i32 %r
+}
+
+define i32 @abs_nsw(i32 %x) {
+; CHECK-LABEL: 'abs_nsw'
+; CHECK-NEXT:  Classifying expressions for: @abs_nsw
+; CHECK-NEXT:    %r = call i32 @llvm.abs.i32(i32 %x, i1 true)
+; CHECK-NEXT:    --> %r U: [0,-2147483648) S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @abs_nsw
+;
+  %r = call i32 @llvm.abs.i32(i32 %x, i1 1)
+  ret i32 %r
+}