From 979d67d952487c76663615d49228f9e6d714b3c2 Mon Sep 17 00:00:00 2001
From: David Bolvansky <david.bolvansky@gmail.com>
Date: Tue, 2 Apr 2019 20:21:26 +0000
Subject: [PATCH] [InstCombine] Added tests for PR41337

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@357522 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../InstCombine/ctpop-bswap-bitreverse.ll     | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll

diff --git a/test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll b/test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll
new file mode 100644
index 00000000000..5005b3d99b3
--- /dev/null
+++ b/test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll
@@ -0,0 +1,53 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -instcombine -S < %s | FileCheck %s
+
+define i32 @ctpop_bitreverse(i32 %x) {
+; CHECK-LABEL: @ctpop_bitreverse(
+; CHECK-NEXT:    [[A:%.*]] = tail call i32 @llvm.bitreverse.i32(i32 [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[A]]), !range !0
+; CHECK-NEXT:    ret i32 [[B]]
+;
+  %a = tail call i32 @llvm.bitreverse.i32(i32 %x)
+  %b = tail call i32 @llvm.ctpop.i32(i32 %a)
+  ret i32 %b
+}
+
+define <2 x i64> @ctpop_bitreverse_vec(<2 x i64> %x) {
+; CHECK-LABEL: @ctpop_bitreverse_vec(
+; CHECK-NEXT:    [[A:%.*]] = tail call <2 x i64> @llvm.bitreverse.v2i64(<2 x i64> [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> [[A]])
+; CHECK-NEXT:    ret <2 x i64> [[B]]
+;
+  %a = tail call <2 x i64> @llvm.bitreverse.v2i64(<2 x i64> %x)
+  %b = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> %a)
+  ret <2 x i64> %b
+}
+
+define i32 @ctpop_bswap(i32 %x) {
+; CHECK-LABEL: @ctpop_bswap(
+; CHECK-NEXT:    [[A:%.*]] = tail call i32 @llvm.bswap.i32(i32 [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[A]]), !range !0
+; CHECK-NEXT:    ret i32 [[B]]
+;
+  %a = tail call i32 @llvm.bswap.i32(i32 %x)
+  %b = tail call i32 @llvm.ctpop.i32(i32 %a)
+  ret i32 %b
+}
+
+define <2 x i64> @ctpop_bswap_vec(<2 x i64> %x) {
+; CHECK-LABEL: @ctpop_bswap_vec(
+; CHECK-NEXT:    [[A:%.*]] = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> [[A]])
+; CHECK-NEXT:    ret <2 x i64> [[B]]
+;
+  %a = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> %x)
+  %b = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> %a)
+  ret <2 x i64> %b
+}
+
+declare i32 @llvm.bitreverse.i32(i32)
+declare <2 x i64> @llvm.bitreverse.v2i64(<2 x i64>)
+declare i32 @llvm.bswap.i32(i32)
+declare <2 x i64> @llvm.bswap.v2i64(<2 x i64>)
+declare i32 @llvm.ctpop.i32(i32)
+declare <2 x i64> @llvm.ctpop.v2i64(<2 x i64>)
-- 
2.40.0