[SCEV] Add tests for min/max intrinsics (NFC)

diff --git a/llvm/test/Analysis/ScalarEvolution/minmax-intrinsics.ll b/llvm/test/Analysis/ScalarEvolution/minmax-intrinsics.ll
new file mode 100644 (file)
index 0000000..c0395c3
--- /dev/null
+++ b/llvm/test/Analysis/ScalarEvolution/minmax-intrinsics.ll
@@ -0,0 +1,66 @@
+; 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.umax.i32(i32, i32)
+declare i32 @llvm.umin.i32(i32, i32)
+declare i32 @llvm.smax.i32(i32, i32)
+declare i32 @llvm.smin.i32(i32, i32)
+
+define i32 @umax(i32 %x, i32 %y) {
+; CHECK-LABEL: 'umax'
+; CHECK-NEXT:  Classifying expressions for: @umax
+; CHECK-NEXT:    %z = call i32 @llvm.umax.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @umax
+;
+  %z = call i32 @llvm.umax.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @umin(i32 %x, i32 %y) {
+; CHECK-LABEL: 'umin'
+; CHECK-NEXT:  Classifying expressions for: @umin
+; CHECK-NEXT:    %z = call i32 @llvm.umin.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @umin
+;
+  %z = call i32 @llvm.umin.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @smax(i32 %x, i32 %y) {
+; CHECK-LABEL: 'smax'
+; CHECK-NEXT:  Classifying expressions for: @smax
+; CHECK-NEXT:    %z = call i32 @llvm.smax.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @smax
+;
+  %z = call i32 @llvm.smax.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @smin(i32 %x, i32 %y) {
+; CHECK-LABEL: 'smin'
+; CHECK-NEXT:  Classifying expressions for: @smin
+; CHECK-NEXT:    %z = call i32 @llvm.smin.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @smin
+;
+  %z = call i32 @llvm.smin.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @clamp(i32 %x) {
+; CHECK-LABEL: 'clamp'
+; CHECK-NEXT:  Classifying expressions for: @clamp
+; CHECK-NEXT:    %y = call i32 @llvm.umax.i32(i32 %x, i32 10)
+; CHECK-NEXT:    --> %y U: full-set S: full-set
+; CHECK-NEXT:    %z = call i32 @llvm.umin.i32(i32 %y, i32 20)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @clamp
+;
+  %y = call i32 @llvm.umax.i32(i32 %x, i32 10)
+  %z = call i32 @llvm.umin.i32(i32 %y, i32 20)
+  ret i32 %z
+}