From 2e0c5c57b49457ddccb757848f06a6eca8f14f8a Mon Sep 17 00:00:00 2001
From: Nemanja Ivanovic <nemanja.i.ibm@gmail.com>
Date: Sat, 23 Sep 2017 12:53:03 +0000
Subject: [PowerPC] Eliminate compares - add i32 sext/zext handling for
 SETULT/SETUGT

As mentioned in https://reviews.llvm.org/D33718, this simply adds another
pattern to the compare elimination sequence and is committed without a
differential revision.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314062 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/PowerPC/testComparesllltus.ll | 59 ++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 test/CodeGen/PowerPC/testComparesllltus.ll

(limited to 'test/CodeGen/PowerPC/testComparesllltus.ll')

diff --git a/test/CodeGen/PowerPC/testComparesllltus.ll b/test/CodeGen/PowerPC/testComparesllltus.ll
new file mode 100644
index 00000000000..e4006965158
--- /dev/null
+++ b/test/CodeGen/PowerPC/testComparesllltus.ll
@@ -0,0 +1,59 @@
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -O2 \
+; RUN:   -ppc-asm-full-reg-names -mcpu=pwr8 < %s | FileCheck %s \
+; RUN:  --implicit-check-not cmpw --implicit-check-not cmpd --implicit-check-not cmpl
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -O2 \
+; RUN:   -ppc-asm-full-reg-names -mcpu=pwr8 < %s | FileCheck %s \
+; RUN:  --implicit-check-not cmpw --implicit-check-not cmpd --implicit-check-not cmpl
+
+@glob = common local_unnamed_addr global i16 0, align 2
+
+; Function Attrs: norecurse nounwind readnone
+define i64 @test_llltus(i16 zeroext %a, i16 zeroext %b) {
+; CHECK-LABEL: test_llltus:
+; CHECK:       # BB#0: # %entry
+; CHECK-NEXT:    sub [[REG:r[0-9]+]], r3, r4
+; CHECK-NEXT:    rldicl r3, [[REG]], 1, 63
+; CHECK-NEXT:    blr
+entry:
+  %cmp = icmp ult i16 %a, %b
+  %conv3 = zext i1 %cmp to i64
+  ret i64 %conv3
+}
+
+; Function Attrs: norecurse nounwind readnone
+define i64 @test_llltus_sext(i16 zeroext %a, i16 zeroext %b) {
+; CHECK-LABEL: test_llltus_sext:
+; CHECK:       # BB#0: # %entry
+; CHECK-NEXT:    sub [[REG:r[0-9]+]], r3, r4
+; CHECK-NEXT:    sradi r3, [[REG]], 63
+; CHECK-NEXT:    blr
+entry:
+  %cmp = icmp ult i16 %a, %b
+  %conv3 = sext i1 %cmp to i64
+  ret i64 %conv3
+}
+
+; Function Attrs: norecurse nounwind
+define void @test_llltus_store(i16 zeroext %a, i16 zeroext %b) {
+; CHECK-LABEL: test_llltus_store:
+; CHECK:         sub [[REG:r[2-9]+]], r3, r4
+; CHECK:         rldicl {{r[0-9]+}}, [[REG]], 1, 63
+entry:
+  %cmp = icmp ult i16 %a, %b
+  %conv3 = zext i1 %cmp to i16
+  store i16 %conv3, i16* @glob, align 2
+  ret void
+}
+
+; Function Attrs: norecurse nounwind
+define void @test_llltus_sext_store(i16 zeroext %a, i16 zeroext %b) {
+; CHECK-LABEL: test_llltus_sext_store:
+; CHECK:       # BB#0: # %entry
+; CHECK:         sub [[REG:r[0-9]+]], r3, r4
+; CHECK:         sradi {{r[0-9]+}}, [[REG]], 63
+entry:
+  %cmp = icmp ult i16 %a, %b
+  %conv3 = sext i1 %cmp to i16
+  store i16 %conv3, i16* @glob, align 2
+  ret void
+}
-- 
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