From: Nikita Popov <nikita.ppv@gmail.com>
Date: Sun, 16 Dec 2018 17:51:32 +0000 (+0000)
Subject: [InstCombined] Add more tests for cttz/ctlz + icmp; NFC
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ac6fe2834cb4be1c0aecb0c71fcae09c778e8593;p=llvm

[InstCombined] Add more tests for cttz/ctlz + icmp; NFC

Test cases other than icmp with the bitwidth.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349310 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/InstCombine/cmp-intrinsic.ll b/test/Transforms/InstCombine/cmp-intrinsic.ll
index 7fc1d12916b..d0ecb70c579 100644
--- a/test/Transforms/InstCombine/cmp-intrinsic.ll
+++ b/test/Transforms/InstCombine/cmp-intrinsic.ll
@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -instcombine -S | FileCheck %s
 
 declare i16 @llvm.bswap.i16(i16)
@@ -13,7 +14,7 @@ declare <2 x i32> @llvm.ctpop.v2i32(<2 x i32>)
 
 define i1 @bswap_eq_i16(i16 %x) {
 ; CHECK-LABEL: @bswap_eq_i16(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i16 %x, 256
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i16 [[X:%.*]], 256
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
   %bs = call i16 @llvm.bswap.i16(i16 %x)
@@ -23,7 +24,7 @@ define i1 @bswap_eq_i16(i16 %x) {
 
 define i1 @bswap_ne_i32(i32 %x) {
 ; CHECK-LABEL: @bswap_ne_i32(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 %x, 33554432
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[X:%.*]], 33554432
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
   %bs = tail call i32 @llvm.bswap.i32(i32 %x)
@@ -33,7 +34,7 @@ define i1 @bswap_ne_i32(i32 %x) {
 
 define <2 x i1> @bswap_eq_v2i64(<2 x i64> %x) {
 ; CHECK-LABEL: @bswap_eq_v2i64(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i64> %x, <i64 216172782113783808, i64 216172782113783808>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i64> [[X:%.*]], <i64 216172782113783808, i64 216172782113783808>
 ; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
   %bs = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> %x)
@@ -43,7 +44,7 @@ define <2 x i1> @bswap_eq_v2i64(<2 x i64> %x) {
 
 define i1 @ctlz_eq_bitwidth_i32(i32 %x) {
 ; CHECK-LABEL: @ctlz_eq_bitwidth_i32(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 %x, 0
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 0
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
   %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
@@ -51,9 +52,75 @@ define i1 @ctlz_eq_bitwidth_i32(i32 %x) {
   ret i1 %cmp
 }
 
+define i1 @ctlz_eq_zero_i32(i32 %x) {
+; CHECK-LABEL: @ctlz_eq_zero_i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[LZ]], 0
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
+  %cmp = icmp eq i32 %lz, 0
+  ret i1 %cmp
+}
+
+define <2 x i1> @ctlz_ne_zero_v2i32(<2 x i32> %a) {
+; CHECK-LABEL: @ctlz_ne_zero_v2i32(
+; CHECK-NEXT:    [[X:%.*]] = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> [[A:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %x = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %a, i1 false)
+  %cmp = icmp ne <2 x i32> %x, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
+define i1 @ctlz_eq_bw_minus_1_i32(i32 %x) {
+; CHECK-LABEL: @ctlz_eq_bw_minus_1_i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[LZ]], 31
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
+  %cmp = icmp eq i32 %lz, 31
+  ret i1 %cmp
+}
+
+define <2 x i1> @ctlz_ne_bw_minus_1_v2i32(<2 x i32> %a) {
+; CHECK-LABEL: @ctlz_ne_bw_minus_1_v2i32(
+; CHECK-NEXT:    [[X:%.*]] = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> [[A:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X]], <i32 31, i32 31>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %x = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %a, i1 false)
+  %cmp = icmp ne <2 x i32> %x, <i32 31, i32 31>
+  ret <2 x i1> %cmp
+}
+
+define i1 @ctlz_eq_other_i32(i32 %x) {
+; CHECK-LABEL: @ctlz_eq_other_i32(
+; CHECK-NEXT:    [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !0
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[LZ]], 24
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
+  %cmp = icmp eq i32 %lz, 24
+  ret i1 %cmp
+}
+
+define <2 x i1> @ctlz_ne_other_v2i32(<2 x i32> %a) {
+; CHECK-LABEL: @ctlz_ne_other_v2i32(
+; CHECK-NEXT:    [[X:%.*]] = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> [[A:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X]], <i32 24, i32 24>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %x = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %a, i1 false)
+  %cmp = icmp ne <2 x i32> %x, <i32 24, i32 24>
+  ret <2 x i1> %cmp
+}
+
 define <2 x i1> @ctlz_ne_bitwidth_v2i32(<2 x i32> %a) {
 ; CHECK-LABEL: @ctlz_ne_bitwidth_v2i32(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> %a, zeroinitializer
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[A:%.*]], zeroinitializer
 ; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
   %x = tail call <2 x i32> @llvm.ctlz.v2i32(<2 x i32> %a, i1 false)
@@ -63,7 +130,7 @@ define <2 x i1> @ctlz_ne_bitwidth_v2i32(<2 x i32> %a) {
 
 define i1 @cttz_ne_bitwidth_i33(i33 %x) {
 ; CHECK-LABEL: @cttz_ne_bitwidth_i33(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i33 %x, 0
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i33 [[X:%.*]], 0
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
   %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
@@ -73,7 +140,7 @@ define i1 @cttz_ne_bitwidth_i33(i33 %x) {
 
 define <2 x i1> @cttz_eq_bitwidth_v2i32(<2 x i32> %a) {
 ; CHECK-LABEL: @cttz_eq_bitwidth_v2i32(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> %a, zeroinitializer
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> [[A:%.*]], zeroinitializer
 ; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
   %x = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %a, i1 false)
@@ -81,9 +148,75 @@ define <2 x i1> @cttz_eq_bitwidth_v2i32(<2 x i32> %a) {
   ret <2 x i1> %cmp
 }
 
+define i1 @cttz_eq_zero_i33(i33 %x) {
+; CHECK-LABEL: @cttz_eq_zero_i33(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i33 [[TZ]], 0
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  %cmp = icmp eq i33 %tz, 0
+  ret i1 %cmp
+}
+
+define <2 x i1> @cttz_ne_zero_v2i32(<2 x i32> %a) {
+; CHECK-LABEL: @cttz_ne_zero_v2i32(
+; CHECK-NEXT:    [[X:%.*]] = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> [[A:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %x = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %a, i1 false)
+  %cmp = icmp ne <2 x i32> %x, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
+define i1 @cttz_eq_bw_minus_1_i33(i33 %x) {
+; CHECK-LABEL: @cttz_eq_bw_minus_1_i33(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i33 [[TZ]], 32
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  %cmp = icmp eq i33 %tz, 32
+  ret i1 %cmp
+}
+
+define <2 x i1> @cttz_ne_bw_minus_1_v2i32(<2 x i32> %a) {
+; CHECK-LABEL: @cttz_ne_bw_minus_1_v2i32(
+; CHECK-NEXT:    [[X:%.*]] = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> [[A:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X]], <i32 31, i32 31>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %x = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %a, i1 false)
+  %cmp = icmp ne <2 x i32> %x, <i32 31, i32 31>
+  ret <2 x i1> %cmp
+}
+
+define i1 @cttz_eq_other_i33(i33 %x) {
+; CHECK-LABEL: @cttz_eq_other_i33(
+; CHECK-NEXT:    [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i33 [[TZ]], 4
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
+  %cmp = icmp eq i33 %tz, 4
+  ret i1 %cmp
+}
+
+define <2 x i1> @cttz_ne_other_v2i32(<2 x i32> %a) {
+; CHECK-LABEL: @cttz_ne_other_v2i32(
+; CHECK-NEXT:    [[X:%.*]] = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> [[A:%.*]], i1 false)
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X]], <i32 4, i32 4>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %x = tail call <2 x i32> @llvm.cttz.v2i32(<2 x i32> %a, i1 false)
+  %cmp = icmp ne <2 x i32> %x, <i32 4, i32 4>
+  ret <2 x i1> %cmp
+}
+
 define i1 @ctpop_eq_zero_i11(i11 %x) {
 ; CHECK-LABEL: @ctpop_eq_zero_i11(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i11 %x, 0
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i11 [[X:%.*]], 0
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
   %pop = tail call i11 @llvm.ctpop.i11(i11 %x)
@@ -93,7 +226,7 @@ define i1 @ctpop_eq_zero_i11(i11 %x) {
 
 define <2 x i1> @ctpop_ne_zero_v2i32(<2 x i32> %x) {
 ; CHECK-LABEL: @ctpop_ne_zero_v2i32(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> %x, zeroinitializer
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X:%.*]], zeroinitializer
 ; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
   %pop = tail call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)
@@ -103,7 +236,7 @@ define <2 x i1> @ctpop_ne_zero_v2i32(<2 x i32> %x) {
 
 define i1 @ctpop_eq_bitwidth_i8(i8 %x) {
 ; CHECK-LABEL: @ctpop_eq_bitwidth_i8(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i8 %x, -1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i8 [[X:%.*]], -1
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
   %pop = tail call i8 @llvm.ctpop.i8(i8 %x)
@@ -113,7 +246,7 @@ define i1 @ctpop_eq_bitwidth_i8(i8 %x) {
 
 define <2 x i1> @ctpop_ne_bitwidth_v2i32(<2 x i32> %x) {
 ; CHECK-LABEL: @ctpop_ne_bitwidth_v2i32(
-; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> %x, <i32 -1, i32 -1>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[X:%.*]], <i32 -1, i32 -1>
 ; CHECK-NEXT:    ret <2 x i1> [[CMP]]
 ;
   %pop = tail call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> %x)