From 0592de550f5c9ca9de44ed2c5c549f6a3b1c32b7 Mon Sep 17 00:00:00 2001
From: Roman Lebedev <lebedev.ri@gmail.com>
Date: Mon, 21 Sep 2020 17:58:31 +0300
Subject: [PATCH] [NFC][SCEV] Add tests for @llvm.*.sat intrinsics

---
 .../ScalarEvolution/saturating-intrinsics.ll       | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 llvm/test/Analysis/ScalarEvolution/saturating-intrinsics.ll

diff --git a/llvm/test/Analysis/ScalarEvolution/saturating-intrinsics.ll b/llvm/test/Analysis/ScalarEvolution/saturating-intrinsics.ll
new file mode 100644
index 0000000..b49cc71
--- /dev/null
+++ b/llvm/test/Analysis/ScalarEvolution/saturating-intrinsics.ll
@@ -0,0 +1,76 @@
+; 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.uadd.sat.i32(i32, i32)
+declare i32 @llvm.sadd.sat.i32(i32, i32)
+declare i32 @llvm.usub.sat.i32(i32, i32)
+declare i32 @llvm.ssub.sat.i32(i32, i32)
+declare i32 @llvm.ushl.sat.i32(i32, i32)
+declare i32 @llvm.sshl.sat.i32(i32, i32)
+
+define i32 @uadd_sat(i32 %x, i32 %y) {
+; CHECK-LABEL: 'uadd_sat'
+; CHECK-NEXT:  Classifying expressions for: @uadd_sat
+; CHECK-NEXT:    %z = call i32 @llvm.uadd.sat.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @uadd_sat
+;
+  %z = call i32 @llvm.uadd.sat.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @sadd_sat(i32 %x, i32 %y) {
+; CHECK-LABEL: 'sadd_sat'
+; CHECK-NEXT:  Classifying expressions for: @sadd_sat
+; CHECK-NEXT:    %z = call i32 @llvm.sadd.sat.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @sadd_sat
+;
+  %z = call i32 @llvm.sadd.sat.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @usub_sat(i32 %x, i32 %y) {
+; CHECK-LABEL: 'usub_sat'
+; CHECK-NEXT:  Classifying expressions for: @usub_sat
+; CHECK-NEXT:    %z = call i32 @llvm.usub.sat.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @usub_sat
+;
+  %z = call i32 @llvm.usub.sat.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @ssub_sat(i32 %x, i32 %y) {
+; CHECK-LABEL: 'ssub_sat'
+; CHECK-NEXT:  Classifying expressions for: @ssub_sat
+; CHECK-NEXT:    %z = call i32 @llvm.ssub.sat.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @ssub_sat
+;
+  %z = call i32 @llvm.ssub.sat.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @ushl_sat(i32 %x, i32 %y) {
+; CHECK-LABEL: 'ushl_sat'
+; CHECK-NEXT:  Classifying expressions for: @ushl_sat
+; CHECK-NEXT:    %z = call i32 @llvm.ushl.sat.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @ushl_sat
+;
+  %z = call i32 @llvm.ushl.sat.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
+
+define i32 @sshl_sat(i32 %x, i32 %y) {
+; CHECK-LABEL: 'sshl_sat'
+; CHECK-NEXT:  Classifying expressions for: @sshl_sat
+; CHECK-NEXT:    %z = call i32 @llvm.sshl.sat.i32(i32 %x, i32 %y)
+; CHECK-NEXT:    --> %z U: full-set S: full-set
+; CHECK-NEXT:  Determining loop execution counts for: @sshl_sat
+;
+  %z = call i32 @llvm.sshl.sat.i32(i32 %x, i32 %y)
+  ret i32 %z
+}
-- 
2.7.4