From 7efd9ceb588b5e76e4ce9ae0b8ed45bfc90645cd Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Mon, 3 Aug 2020 13:50:54 -0400
Subject: [PATCH] [InstSimplify] add tests for min-of-max variants; NFC

---
 .../Transforms/InstSimplify/maxmin_intrinsics.ll   | 220 +++++++++++++++++++++
 1 file changed, 220 insertions(+)

diff --git a/llvm/test/Transforms/InstSimplify/maxmin_intrinsics.ll b/llvm/test/Transforms/InstSimplify/maxmin_intrinsics.ll
index c0064ab..7c79357 100644
--- a/llvm/test/Transforms/InstSimplify/maxmin_intrinsics.ll
+++ b/llvm/test/Transforms/InstSimplify/maxmin_intrinsics.ll
@@ -427,3 +427,223 @@ define i8 @smin_smin_commute3(i8 %x, i8 %y) {
   %m2 = call i8 @llvm.smin.i8(i8 %m, i8 %x)
   ret i8 %m2
 }
+
+define i8 @umax_umin(i8 %x, i8 %y) {
+; CHECK-LABEL: @umax_umin(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umin.i8(i8 [[X]], i8 [[M]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umax.i8(i8 %x, i8 %y)
+  %m2 = call i8 @llvm.umin.i8(i8 %x, i8 %m)
+  ret i8 %m2
+}
+
+define i8 @umax_umin_commute1(i8 %x, i8 %y) {
+; CHECK-LABEL: @umax_umin_commute1(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umin.i8(i8 [[X]], i8 [[M]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umax.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.umin.i8(i8 %x, i8 %m)
+  ret i8 %m2
+}
+
+define i8 @umax_umin_commute2(i8 %x, i8 %y) {
+; CHECK-LABEL: @umax_umin_commute2(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umin.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umax.i8(i8 %x, i8 %y)
+  %m2 = call i8 @llvm.umin.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define <2 x i8> @umax_umin_commute3(<2 x i8> %x, <2 x i8> %y) {
+; CHECK-LABEL: @umax_umin_commute3(
+; CHECK-NEXT:    [[M:%.*]] = call <2 x i8> @llvm.umax.v2i8(<2 x i8> [[Y:%.*]], <2 x i8> [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call <2 x i8> @llvm.umin.v2i8(<2 x i8> [[M]], <2 x i8> [[X]])
+; CHECK-NEXT:    ret <2 x i8> [[M2]]
+;
+  %m = call <2 x i8> @llvm.umax.v2i8(<2 x i8> %y, <2 x i8> %x)
+  %m2 = call <2 x i8> @llvm.umin.v2i8(<2 x i8> %m, <2 x i8> %x)
+  ret <2 x i8> %m2
+}
+
+define i8 @umin_umax(i8 %x, i8 %y) {
+; CHECK-LABEL: @umin_umax(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umin.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[M]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umin.i8(i8 %x, i8 %y)
+  %m2 = call i8 @llvm.umax.i8(i8 %x, i8 %m)
+  ret i8 %m2
+}
+
+define i8 @umin_umax_commute1(i8 %x, i8 %y) {
+; CHECK-LABEL: @umin_umax_commute1(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umin.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[M]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umin.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.umax.i8(i8 %x, i8 %m)
+  ret i8 %m2
+}
+
+define <2 x i8> @umin_umax_commute2(<2 x i8> %x, <2 x i8> %y) {
+; CHECK-LABEL: @umin_umax_commute2(
+; CHECK-NEXT:    [[M:%.*]] = call <2 x i8> @llvm.umin.v2i8(<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call <2 x i8> @llvm.umax.v2i8(<2 x i8> [[M]], <2 x i8> [[X]])
+; CHECK-NEXT:    ret <2 x i8> [[M2]]
+;
+  %m = call <2 x i8> @llvm.umin.v2i8(<2 x i8> %x, <2 x i8> %y)
+  %m2 = call <2 x i8> @llvm.umax.v2i8(<2 x i8> %m, <2 x i8> %x)
+  ret <2 x i8> %m2
+}
+
+define i8 @umin_umax_commute3(i8 %x, i8 %y) {
+; CHECK-LABEL: @umin_umax_commute3(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umin.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umax.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umin.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.umax.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define i8 @smax_smin(i8 %x, i8 %y) {
+; CHECK-LABEL: @smax_smin(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smin.i8(i8 [[X]], i8 [[M]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smax.i8(i8 %x, i8 %y)
+  %m2 = call i8 @llvm.smin.i8(i8 %x, i8 %m)
+  ret i8 %m2
+}
+
+define <2 x i8> @smax_smin_commute1(<2 x i8> %x, <2 x i8> %y) {
+; CHECK-LABEL: @smax_smin_commute1(
+; CHECK-NEXT:    [[M:%.*]] = call <2 x i8> @llvm.smax.v2i8(<2 x i8> [[Y:%.*]], <2 x i8> [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call <2 x i8> @llvm.smin.v2i8(<2 x i8> [[X]], <2 x i8> [[M]])
+; CHECK-NEXT:    ret <2 x i8> [[M2]]
+;
+  %m = call <2 x i8> @llvm.smax.v2i8(<2 x i8> %y, <2 x i8> %x)
+  %m2 = call <2 x i8> @llvm.smin.v2i8(<2 x i8> %x, <2 x i8> %m)
+  ret <2 x i8> %m2
+}
+
+define i8 @smax_smin_commute2(i8 %x, i8 %y) {
+; CHECK-LABEL: @smax_smin_commute2(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smin.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smax.i8(i8 %x, i8 %y)
+  %m2 = call i8 @llvm.smin.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define i8 @smax_smin_commute3(i8 %x, i8 %y) {
+; CHECK-LABEL: @smax_smin_commute3(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smax.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smin.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smax.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.smin.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define <2 x i8> @smin_smax(<2 x i8> %x, <2 x i8> %y) {
+; CHECK-LABEL: @smin_smax(
+; CHECK-NEXT:    [[M:%.*]] = call <2 x i8> @llvm.smin.v2i8(<2 x i8> [[X:%.*]], <2 x i8> [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call <2 x i8> @llvm.smax.v2i8(<2 x i8> [[X]], <2 x i8> [[M]])
+; CHECK-NEXT:    ret <2 x i8> [[M2]]
+;
+  %m = call <2 x i8> @llvm.smin.v2i8(<2 x i8> %x, <2 x i8> %y)
+  %m2 = call <2 x i8> @llvm.smax.v2i8(<2 x i8> %x, <2 x i8> %m)
+  ret <2 x i8> %m2
+}
+
+define i8 @smin_smax_commute1(i8 %x, i8 %y) {
+; CHECK-LABEL: @smin_smax_commute1(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smin.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smax.i8(i8 [[X]], i8 [[M]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smin.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.smax.i8(i8 %x, i8 %m)
+  ret i8 %m2
+}
+
+define i8 @smin_smax_commute2(i8 %x, i8 %y) {
+; CHECK-LABEL: @smin_smax_commute2(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smin.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smax.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smin.i8(i8 %x, i8 %y)
+  %m2 = call i8 @llvm.smax.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define i8 @smin_smax_commute3(i8 %x, i8 %y) {
+; CHECK-LABEL: @smin_smax_commute3(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smin.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smax.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smin.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.smax.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define i8 @smax_umin(i8 %x, i8 %y) {
+; CHECK-LABEL: @smax_umin(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smax.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umin.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smax.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.umin.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define i8 @smax_umax(i8 %x, i8 %y) {
+; CHECK-LABEL: @smax_umax(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smax.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.umax.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.smax.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.umax.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define i8 @umax_smin(i8 %x, i8 %y) {
+; CHECK-LABEL: @umax_smin(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smin.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umax.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.smin.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
+
+define i8 @umin_smin(i8 %x, i8 %y) {
+; CHECK-LABEL: @umin_smin(
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umin.i8(i8 [[Y:%.*]], i8 [[X:%.*]])
+; CHECK-NEXT:    [[M2:%.*]] = call i8 @llvm.smin.i8(i8 [[M]], i8 [[X]])
+; CHECK-NEXT:    ret i8 [[M2]]
+;
+  %m = call i8 @llvm.umin.i8(i8 %y, i8 %x)
+  %m2 = call i8 @llvm.smin.i8(i8 %m, i8 %x)
+  ret i8 %m2
+}
-- 
2.7.4