From 92b196b1b60f25ae1bcd068f6a0e8d4e23aba127 Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Thu, 15 Jun 2017 15:13:19 +0000
Subject: [PATCH] [InstCombine] auto-generate complete checks; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305474 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/InstCombine/ffs-1.ll | 156 ++++++++++++++++++---------
 1 file changed, 106 insertions(+), 50 deletions(-)

diff --git a/test/Transforms/InstCombine/ffs-1.ll b/test/Transforms/InstCombine/ffs-1.ll
index d27fb5d89f0..af4ee85216e 100644
--- a/test/Transforms/InstCombine/ffs-1.ll
+++ b/test/Transforms/InstCombine/ffs-1.ll
@@ -1,12 +1,12 @@
 ; Test that the ffs* library call simplifier works correctly.
 ;
-; RUN: opt < %s -instcombine -S | FileCheck %s
-; RUN: opt < %s -mtriple i386-pc-linux -instcombine -S | FileCheck %s -check-prefix=CHECK-FFS
-; RUN: opt -instcombine -mtriple=arm64-apple-ios9.0 -S %s | FileCheck --check-prefix=CHECK-FFS %s
-; RUN: opt -instcombine -mtriple=arm64-apple-tvos9.0 -S %s | FileCheck --check-prefix=CHECK-FFS %s
-; RUN: opt -instcombine -mtriple=thumbv7k-apple-watchos2.0 -S %s | FileCheck --check-prefix=CHECK-FFS %s
-; RUN: opt -instcombine -mtriple=x86_64-apple-macosx10.11 -S %s | FileCheck --check-prefix=CHECK-FFS %s
-; RUN: opt -instcombine -mtriple=x86_64-freebsd-gnu -S %s | FileCheck --check-prefix=CHECK-FFS %s
+; RUN: opt < %s -instcombine -S                                    | FileCheck %s --check-prefix=ALL --check-prefix=GENERIC
+; RUN: opt < %s -instcombine -mtriple i386-pc-linux -S             | FileCheck %s --check-prefix=ALL --check-prefix=TARGET
+; RUN: opt < %s -instcombine -mtriple=arm64-apple-ios9.0 -S        | FileCheck %s --check-prefix=ALL --check-prefix=TARGET
+; RUN: opt < %s -instcombine -mtriple=arm64-apple-tvos9.0 -S       | FileCheck %s --check-prefix=ALL --check-prefix=TARGET
+; RUN: opt < %s -instcombine -mtriple=thumbv7k-apple-watchos2.0 -S | FileCheck %s --check-prefix=ALL --check-prefix=TARGET
+; RUN: opt < %s -instcombine -mtriple=x86_64-apple-macosx10.11 -S  | FileCheck %s --check-prefix=ALL --check-prefix=TARGET
+; RUN: opt < %s -instcombine -mtriple=x86_64-freebsd-gnu -S        | FileCheck %s --check-prefix=ALL --check-prefix=TARGET
 
 declare i32 @ffs(i32)
 declare i32 @ffsl(i32)
@@ -15,123 +15,179 @@ declare i32 @ffsll(i64)
 ; Check ffs(0) -> 0.
 
 define i32 @test_simplify1() {
-; CHECK-LABEL: @test_simplify1(
+; ALL-LABEL: @test_simplify1(
+; ALL-NEXT:    ret i32 0
+;
   %ret = call i32 @ffs(i32 0)
   ret i32 %ret
-; CHECK-NEXT: ret i32 0
 }
 
 define i32 @test_simplify2() {
-; CHECK-FFS-LABEL: @test_simplify2(
+; GENERIC-LABEL: @test_simplify2(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsl(i32 0)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify2(
+; TARGET-NEXT:    ret i32 0
+;
   %ret = call i32 @ffsl(i32 0)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 0
 }
 
 define i32 @test_simplify3() {
-; CHECK-FFS-LABEL: @test_simplify3(
+; GENERIC-LABEL: @test_simplify3(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsll(i64 0)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify3(
+; TARGET-NEXT:    ret i32 0
+;
   %ret = call i32 @ffsll(i64 0)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 0
 }
 
 ; Check ffs(c) -> cttz(c) + 1, where 'c' is a constant.
 
 define i32 @test_simplify4() {
-; CHECK-LABEL: @test_simplify4(
+; ALL-LABEL: @test_simplify4(
+; ALL-NEXT:    ret i32 1
+;
   %ret = call i32 @ffs(i32 1)
   ret i32 %ret
-; CHECK-NEXT: ret i32 1
 }
 
 define i32 @test_simplify5() {
-; CHECK-LABEL: @test_simplify5(
+; ALL-LABEL: @test_simplify5(
+; ALL-NEXT:    ret i32 12
+;
   %ret = call i32 @ffs(i32 2048)
   ret i32 %ret
-; CHECK-NEXT: ret i32 12
 }
 
 define i32 @test_simplify6() {
-; CHECK-LABEL: @test_simplify6(
+; ALL-LABEL: @test_simplify6(
+; ALL-NEXT:    ret i32 17
+;
   %ret = call i32 @ffs(i32 65536)
   ret i32 %ret
-; CHECK-NEXT: ret i32 17
 }
 
 define i32 @test_simplify7() {
-; CHECK-FFS-LABEL: @test_simplify7(
+; GENERIC-LABEL: @test_simplify7(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsl(i32 65536)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify7(
+; TARGET-NEXT:    ret i32 17
+;
   %ret = call i32 @ffsl(i32 65536)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 17
 }
 
 define i32 @test_simplify8() {
-; CHECK-FFS-LABEL: @test_simplify8(
+; GENERIC-LABEL: @test_simplify8(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsll(i64 1024)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify8(
+; TARGET-NEXT:    ret i32 11
+;
   %ret = call i32 @ffsll(i64 1024)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 11
 }
 
 define i32 @test_simplify9() {
-; CHECK-FFS-LABEL: @test_simplify9(
+; GENERIC-LABEL: @test_simplify9(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsll(i64 65536)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify9(
+; TARGET-NEXT:    ret i32 17
+;
   %ret = call i32 @ffsll(i64 65536)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 17
 }
 
 define i32 @test_simplify10() {
-; CHECK-FFS-LABEL: @test_simplify10(
+; GENERIC-LABEL: @test_simplify10(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsll(i64 17179869184)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify10(
+; TARGET-NEXT:    ret i32 35
+;
   %ret = call i32 @ffsll(i64 17179869184)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 35
 }
 
 define i32 @test_simplify11() {
-; CHECK-FFS-LABEL: @test_simplify11(
+; GENERIC-LABEL: @test_simplify11(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsll(i64 281474976710656)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify11(
+; TARGET-NEXT:    ret i32 49
+;
   %ret = call i32 @ffsll(i64 281474976710656)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 49
 }
 
 define i32 @test_simplify12() {
-; CHECK-FFS-LABEL: @test_simplify12(
+; GENERIC-LABEL: @test_simplify12(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsll(i64 1152921504606846976)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify12(
+; TARGET-NEXT:    ret i32 61
+;
   %ret = call i32 @ffsll(i64 1152921504606846976)
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 61
 }
 
 ; Check ffs(x) -> x != 0 ? (i32)llvm.cttz(x) + 1 : 0.
 
 define i32 @test_simplify13(i32 %x) {
-; CHECK-LABEL: @test_simplify13(
+; ALL-LABEL: @test_simplify13(
+; ALL-NEXT:    [[CTTZ:%.*]] = call i32 @llvm.cttz.i32(i32 %x, i1 true)
+; ALL-NEXT:    [[TMP1:%.*]] = add nuw nsw i32 [[CTTZ]], 1
+; ALL-NEXT:    [[TMP2:%.*]] = icmp ne i32 %x, 0
+; ALL-NEXT:    [[TMP3:%.*]] = select i1 [[TMP2]], i32 [[TMP1]], i32 0
+; ALL-NEXT:    ret i32 [[TMP3]]
+;
   %ret = call i32 @ffs(i32 %x)
-; CHECK-NEXT: [[CTTZ:%[a-z0-9]+]] = call i32 @llvm.cttz.i32(i32 %x, i1 true)
-; CHECK-NEXT: [[INC:%[a-z0-9]+]] = add nuw nsw i32 [[CTTZ]], 1
-; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ne i32 %x, 0
-; CHECK-NEXT: [[RET:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[INC]], i32 0
   ret i32 %ret
-; CHECK-NEXT: ret i32 [[RET]]
 }
 
 define i32 @test_simplify14(i32 %x) {
-; CHECK-FFS-LABEL: @test_simplify14(
+; GENERIC-LABEL: @test_simplify14(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsl(i32 %x)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify14(
+; TARGET-NEXT:    [[CTTZ:%.*]] = call i32 @llvm.cttz.i32(i32 %x, i1 true)
+; TARGET-NEXT:    [[TMP1:%.*]] = add nuw nsw i32 [[CTTZ]], 1
+; TARGET-NEXT:    [[TMP2:%.*]] = icmp ne i32 %x, 0
+; TARGET-NEXT:    [[TMP3:%.*]] = select i1 [[TMP2]], i32 [[TMP1]], i32 0
+; TARGET-NEXT:    ret i32 [[TMP3]]
+;
   %ret = call i32 @ffsl(i32 %x)
-; CHECK-FFS-NEXT: [[CTTZ:%[a-z0-9]+]] = call i32 @llvm.cttz.i32(i32 %x, i1 true)
-; CHECK-FFS-NEXT: [[INC:%[a-z0-9]+]] = add nuw nsw i32 [[CTTZ]], 1
-; CHECK-FFS-NEXT: [[CMP:%[a-z0-9]+]] = icmp ne i32 %x, 0
-; CHECK-FFS-NEXT: [[RET:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[INC]], i32 0
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 [[RET]]
 }
 
 define i32 @test_simplify15(i64 %x) {
-; CHECK-FFS-LABEL: @test_simplify15(
+; GENERIC-LABEL: @test_simplify15(
+; GENERIC-NEXT:    [[RET:%.*]] = call i32 @ffsll(i64 %x)
+; GENERIC-NEXT:    ret i32 [[RET]]
+;
+; TARGET-LABEL: @test_simplify15(
+; TARGET-NEXT:    [[CTTZ:%.*]] = call i64 @llvm.cttz.i64(i64 %x, i1 true)
+; TARGET-NEXT:    [[TMP1:%.*]] = add nuw nsw i64 [[CTTZ]], 1
+; TARGET-NEXT:    [[TMP2:%.*]] = trunc i64 [[TMP1]] to i32
+; TARGET-NEXT:    [[TMP3:%.*]] = icmp ne i64 %x, 0
+; TARGET-NEXT:    [[TMP4:%.*]] = select i1 [[TMP3]], i32 [[TMP2]], i32 0
+; TARGET-NEXT:    ret i32 [[TMP4]]
+;
   %ret = call i32 @ffsll(i64 %x)
-; CHECK-FFS-NEXT: [[CTTZ:%[a-z0-9]+]] = call i64 @llvm.cttz.i64(i64 %x, i1 true)
-; CHECK-FFS-NEXT: [[INC:%[a-z0-9]+]] = add nuw nsw i64 [[CTTZ]], 1
-; CHECK-FFS-NEXT: [[TRUNC:%[a-z0-9]+]] = trunc i64 [[INC]] to i32
-; CHECK-FFS-NEXT: [[CMP:%[a-z0-9]+]] = icmp ne i64 %x, 0
-; CHECK-FFS-NEXT: [[RET:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[TRUNC]], i32 0
   ret i32 %ret
-; CHECK-FFS-NEXT: ret i32 [[RET]]
 }
+
-- 
2.50.1