From: Nikita Popov <nikita.ppv@gmail.com>
Date: Sat, 5 Jan 2019 17:36:05 +0000 (+0000)
Subject: [InstCombine] Improve cttz/ctlz + icmp tests; NFC
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b77ce1890a8f2391d22c3dd0bd20f70c36256ddd;p=llvm

[InstCombine] Improve cttz/ctlz + icmp tests; NFC

Change part of the tests to use vectors (I'm using scalar for ugt
and vector for ult), add multiuse variations, rename %lz to %tz
for the cttz tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350471 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/InstCombine/cmp-intrinsic.ll b/test/Transforms/InstCombine/cmp-intrinsic.ll
index feea7c21528..d9199ce3ff4 100644
--- a/test/Transforms/InstCombine/cmp-intrinsic.ll
+++ b/test/Transforms/InstCombine/cmp-intrinsic.ll
@@ -169,6 +169,19 @@ define i1 @ctlz_ugt_other_i32(i32 %x) {
   ret i1 %cmp
 }
 
+define i1 @ctlz_ugt_other_multiuse_i32(i32 %x, i32* %p) {
+; CHECK-LABEL: @ctlz_ugt_other_multiuse_i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
+; CHECK-NEXT:    store i32 [[LZ]], i32* [[P:%.*]], align 4
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i32 [[LZ]], 16
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
+  store i32 %lz, i32* %p
+  %cmp = icmp ugt i32 %lz, 16
+  ret i1 %cmp
+}
+
 define i1 @ctlz_ugt_bw_minus_one_i32(i32 %x) {
 ; CHECK-LABEL: @ctlz_ugt_bw_minus_one_i32(
 ; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
@@ -180,47 +193,60 @@ define i1 @ctlz_ugt_bw_minus_one_i32(i32 %x) {
   ret i1 %cmp
 }
 
-define i1 @ctlz_ult_one_i32(i32 %x) {
-; CHECK-LABEL: @ctlz_ult_one_i32(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[X:%.*]], 0
-; CHECK-NEXT:    ret i1 [[CMP]]
+define <2 x i1> @ctlz_ult_one_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @ctlz_ult_one_v2i32(
+; CHECK-NEXT:    [[CMP:%.*]] = icmp slt <2 x i32> [[X:%.*]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
-  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
-  %cmp = icmp ult i32 %lz, 1
-  ret i1 %cmp
+  %lz = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %lz, <i32 1, i32 1>
+  ret <2 x i1> %cmp
 }
 
-define i1 @ctlz_ult_other_i32(i32 %x) {
-; CHECK-LABEL: @ctlz_ult_other_i32(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[LZ]], 16
-; CHECK-NEXT:    ret i1 [[CMP]]
+define <2 x i1> @ctlz_ult_other_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @ctlz_ult_other_v2i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[LZ]], <i32 16, i32 16>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
-  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
-  %cmp = icmp ult i32 %lz, 16
-  ret i1 %cmp
+  %lz = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %lz, <i32 16, i32 16>
+  ret <2 x i1> %cmp
 }
 
-define i1 @ctlz_ult_bw_minus_one_i32(i32 %x) {
-; CHECK-LABEL: @ctlz_ult_bw_minus_one_i32(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[LZ]], 31
-; CHECK-NEXT:    ret i1 [[CMP]]
+define <2 x i1> @ctlz_ult_other_multiuse_v2i32(<2 x i32> %x, <2 x i32>* %p) {
+; CHECK-LABEL: @ctlz_ult_other_multiuse_v2i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    store <2 x i32> [[LZ]], <2 x i32>* [[P:%.*]], align 8
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[LZ]], <i32 16, i32 16>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
-  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
-  %cmp = icmp ult i32 %lz, 31
-  ret i1 %cmp
+  %lz = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %x, i1 false)
+  store <2 x i32> %lz, <2 x i32>* %p
+  %cmp = icmp ult <2 x i32> %lz, <i32 16, i32 16>
+  ret <2 x i1> %cmp
 }
 
-define i1 @ctlz_ult_bitwidth_i32(i32 %x) {
-; CHECK-LABEL: @ctlz_ult_bitwidth_i32(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 [[LZ]], 32
-; CHECK-NEXT:    ret i1 [[CMP]]
+define <2 x i1> @ctlz_ult_bw_minus_one_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @ctlz_ult_bw_minus_one_v2i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[LZ]], <i32 31, i32 31>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
-  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
-  %cmp = icmp ult i32 %lz, 32
-  ret i1 %cmp
+  %lz = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %lz, <i32 31, i32 31>
+  ret <2 x i1> %cmp
+}
+
+define <2 x i1> @ctlz_ult_bitwidth_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @ctlz_ult_bitwidth_v2i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[LZ]], <i32 32, i32 32>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %lz = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %lz, <i32 32, i32 32>
+  ret <2 x i1> %cmp
 }
 
 define i1 @cttz_ne_bitwidth_i33(i33 %x) {
@@ -309,14 +335,14 @@ define <2 x i1> @cttz_ne_other_v2i32(<2 x i32> %a) {
 
 define i1 @cttz_eq_other_i33_multiuse(i33 %x, i33* %p) {
 ; CHECK-LABEL: @cttz_eq_other_i33_multiuse(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
-; CHECK-NEXT:    store i33 [[LZ]], i33* [[P:%.*]], align 4
-; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i33 [[LZ]], 4
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    store i33 [[TZ]], i33* [[P:%.*]], align 4
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i33 [[TZ]], 4
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  store i33 %lz, i33* %p
-  %cmp = icmp eq i33 %lz, 4
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  store i33 %tz, i33* %p
+  %cmp = icmp eq i33 %tz, 4
   ret i1 %cmp
 }
 
@@ -326,86 +352,111 @@ define i1 @cttz_ugt_zero_i33(i33 %x) {
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i33 [[TMP1]], 0
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ugt i33 %lz, 0
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  %cmp = icmp ugt i33 %tz, 0
   ret i1 %cmp
 }
 
 define i1 @cttz_ugt_one_i33(i33 %x) {
 ; CHECK-LABEL: @cttz_ugt_one_i33(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i33 [[LZ]], 1
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i33 [[TZ]], 1
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ugt i33 %lz, 1
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  %cmp = icmp ugt i33 %tz, 1
   ret i1 %cmp
 }
 
 define i1 @cttz_ugt_other_i33(i33 %x) {
 ; CHECK-LABEL: @cttz_ugt_other_i33(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i33 [[LZ]], 16
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i33 [[TZ]], 16
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ugt i33 %lz, 16
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  %cmp = icmp ugt i33 %tz, 16
   ret i1 %cmp
 }
 
-define i1 @cttz_ugt_bw_minus_one_i33(i33 %x) {
-; CHECK-LABEL: @cttz_ugt_bw_minus_one_i33(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i33 [[LZ]], 32
+define i1 @cttz_ugt_other_multiuse_i33(i33 %x, i33* %p) {
+; CHECK-LABEL: @cttz_ugt_other_multiuse_i33(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    store i33 [[TZ]], i33* [[P:%.*]], align 4
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i33 [[TZ]], 16
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ugt i33 %lz, 32
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  store i33 %tz, i33* %p
+  %cmp = icmp ugt i33 %tz, 16
   ret i1 %cmp
 }
 
-define i1 @cttz_ult_one_i33(i33 %x) {
-; CHECK-LABEL: @cttz_ult_one_i33(
-; CHECK-NEXT:    [[TMP1:%.*]] = and i33 [[X:%.*]], 1
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i33 [[TMP1]], 0
+define i1 @cttz_ugt_bw_minus_one_i33(i33 %x) {
+; CHECK-LABEL: @cttz_ugt_bw_minus_one_i33(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i33 [[TZ]], 32
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ult i33 %lz, 1
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  %cmp = icmp ugt i33 %tz, 32
   ret i1 %cmp
 }
 
-define i1 @cttz_ult_other_i33(i33 %x) {
-; CHECK-LABEL: @cttz_ult_other_i33(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i33 [[LZ]], 16
-; CHECK-NEXT:    ret i1 [[CMP]]
+define <2 x i1> @cttz_ult_one_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @cttz_ult_one_v2i32(
+; CHECK-NEXT:    [[CMP:%.*]] = trunc <2 x i32> [[X:%.*]] to <2 x i1>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ult i33 %lz, 16
-  ret i1 %cmp
+  %tz = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %tz, <i32 1, i32 1>
+  ret <2 x i1> %cmp
 }
 
-define i1 @cttz_ult_bw_minus_one_i33(i33 %x) {
-; CHECK-LABEL: @cttz_ult_bw_minus_one_i33(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i33 [[LZ]], 32
-; CHECK-NEXT:    ret i1 [[CMP]]
+define <2 x i1> @cttz_ult_other_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @cttz_ult_other_v2i32(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[TZ]], <i32 16, i32 16>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ult i33 %lz, 32
-  ret i1 %cmp
+  %tz = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %tz, <i32 16, i32 16>
+  ret <2 x i1> %cmp
 }
 
-define i1 @cttz_ult_bitwidth_i33(i33 %x) {
-; CHECK-LABEL: @cttz_ult_bitwidth_i33(
-; CHECK-NEXT:    [[LZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i33 [[LZ]], 33
-; CHECK-NEXT:    ret i1 [[CMP]]
+define <2 x i1> @cttz_ult_other_multiuse_v2i32(<2 x i32> %x, <2 x i32>* %p) {
+; CHECK-LABEL: @cttz_ult_other_multiuse_v2i32(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    store <2 x i32> [[TZ]], <2 x i32>* [[P:%.*]], align 8
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[TZ]], <i32 16, i32 16>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
-  %lz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
-  %cmp = icmp ult i33 %lz, 33
-  ret i1 %cmp
+  %tz = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %x, i1 false)
+  store <2 x i32> %tz, <2 x i32>* %p
+  %cmp = icmp ult <2 x i32> %tz, <i32 16, i32 16>
+  ret <2 x i1> %cmp
+}
+
+define <2 x i1> @cttz_ult_bw_minus_one_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @cttz_ult_bw_minus_one_v2i32(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[TZ]], <i32 31, i32 31>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %tz = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %tz, <i32 31, i32 31>
+  ret <2 x i1> %cmp
+}
+
+define <2 x i1> @cttz_ult_bitwidth_v2i32(<2 x i32> %x) {
+; CHECK-LABEL: @cttz_ult_bitwidth_v2i32(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> [[X:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult <2 x i32> [[TZ]], <i32 32, i32 32>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %tz = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %x, i1 false)
+  %cmp = icmp ult <2 x i32> %tz, <i32 32, i32 32>
+  ret <2 x i1> %cmp
 }
 
 define i1 @ctpop_eq_zero_i11(i11 %x) {