From 3f8264b06286fe03a1db90f1c90a038fc60dbb9c Mon Sep 17 00:00:00 2001
From: Philip Reames <listmail@philipreames.com>
Date: Sun, 23 Jun 2019 17:13:53 +0000
Subject: [PATCH] [Tests] Autogen and improve test readability

llvm-svn: 364156
---
 .../IndVarSimplify/floating-point-iv.ll       | 141 ++++++++++++------
 1 file changed, 95 insertions(+), 46 deletions(-)

diff --git a/llvm/test/Transforms/IndVarSimplify/floating-point-iv.ll b/llvm/test/Transforms/IndVarSimplify/floating-point-iv.ll
index ef08863428e4..d8a215891790 100644
--- a/llvm/test/Transforms/IndVarSimplify/floating-point-iv.ll
+++ b/llvm/test/Transforms/IndVarSimplify/floating-point-iv.ll
@@ -1,92 +1,141 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -indvars -S | FileCheck %s
+
 define void @test1() nounwind {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[BB:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[IV_INT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[DOTINT:%.*]], [[BB]] ]
+; CHECK-NEXT:    [[INDVAR_CONV:%.*]] = sitofp i32 [[IV_INT]] to double
+; CHECK-NEXT:    [[TMP0:%.*]] = tail call i32 @foo(double [[INDVAR_CONV]]) #0
+; CHECK-NEXT:    [[DOTINT]] = add nuw nsw i32 [[IV_INT]], 1
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp ult i32 [[DOTINT]], 10000
+; CHECK-NEXT:    br i1 [[TMP1]], label [[BB]], label [[RETURN:%.*]]
+; CHECK:       return:
+; CHECK-NEXT:    ret void
+;
 entry:
-	br label %bb
+  br label %bb
 
 bb:		; preds = %bb, %entry
-	%x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ]		; <double> [#uses=2]
-	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind		; <i32> [#uses=0]
-	%1 = fadd double %x.0.reg2mem.0, 1.000000e+00		; <double> [#uses=2]
-	%2 = fcmp olt double %1, 1.000000e+04		; <i1> [#uses=1]
-	br i1 %2, label %bb, label %return
+  %iv = phi double [ 0.000000e+00, %entry ], [ %1, %bb ]
+  %0 = tail call i32 @foo(double %iv) nounwind
+  %1 = fadd double %iv, 1.000000e+00
+  %2 = fcmp olt double %1, 1.000000e+04
+  br i1 %2, label %bb, label %return
 
 return:		; preds = %bb
-	ret void
-; CHECK-LABEL: @test1(
-; CHECK: icmp
+  ret void
 }
 
 declare i32 @foo(double)
 
 define void @test2() nounwind {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[BB:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[IV_INT:%.*]] = phi i32 [ -10, [[ENTRY:%.*]] ], [ [[DOTINT:%.*]], [[BB]] ]
+; CHECK-NEXT:    [[INDVAR_CONV:%.*]] = sitofp i32 [[IV_INT]] to double
+; CHECK-NEXT:    [[TMP0:%.*]] = tail call i32 @foo(double [[INDVAR_CONV]]) #0
+; CHECK-NEXT:    [[DOTINT]] = add nsw i32 [[IV_INT]], 2
+; CHECK-NEXT:    [[TMP1:%.*]] = icmp slt i32 [[DOTINT]], -1
+; CHECK-NEXT:    br i1 [[TMP1]], label [[BB]], label [[RETURN:%.*]]
+; CHECK:       return:
+; CHECK-NEXT:    ret void
+;
 entry:
-	br label %bb
+  br label %bb
 
 bb:		; preds = %bb, %entry
-	%x.0.reg2mem.0 = phi double [ -10.000000e+00, %entry ], [ %1, %bb ]		; <double> [#uses=2]
-	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind		; <i32> [#uses=0]
-	%1 = fadd double %x.0.reg2mem.0, 2.000000e+00		; <double> [#uses=2]
-	%2 = fcmp olt double %1, -1.000000e+00		; <i1> [#uses=1]
-	br i1 %2, label %bb, label %return
+  %iv = phi double [ -10.000000e+00, %entry ], [ %1, %bb ]
+  %0 = tail call i32 @foo(double %iv) nounwind
+  %1 = fadd double %iv, 2.000000e+00
+  %2 = fcmp olt double %1, -1.000000e+00
+  br i1 %2, label %bb, label %return
 
 return:		; preds = %bb
-	ret void
-; CHECK-LABEL: @test2(
-; CHECK: icmp
+  ret void
 }
 
 
 define void @test3() nounwind {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[BB:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[IV:%.*]] = phi double [ 0.000000e+00, [[ENTRY:%.*]] ], [ [[TMP1:%.*]], [[BB]] ]
+; CHECK-NEXT:    [[TMP0:%.*]] = tail call i32 @foo(double [[IV]]) #0
+; CHECK-NEXT:    [[TMP1]] = fadd double [[IV]], 1.000000e+00
+; CHECK-NEXT:    br i1 false, label [[BB]], label [[RETURN:%.*]]
+; CHECK:       return:
+; CHECK-NEXT:    ret void
+;
 entry:
-	br label %bb
+  br label %bb
 
 bb:		; preds = %bb, %entry
-	%x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ]
-	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind
-	%1 = fadd double %x.0.reg2mem.0, 1.000000e+00
-	%2 = fcmp olt double %1, -1.000000e+00
-	br i1 %2, label %bb, label %return
+  %iv = phi double [ 0.000000e+00, %entry ], [ %1, %bb ]
+  %0 = tail call i32 @foo(double %iv) nounwind
+  %1 = fadd double %iv, 1.000000e+00
+  %2 = fcmp olt double %1, -1.000000e+00
+  br i1 %2, label %bb, label %return
 
 return:
-	ret void
-; CHECK-LABEL: @test3(
-; CHECK: br i1 false
+  ret void
 }
 
 define void @test4() nounwind {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[BB:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[IV_INT:%.*]] = phi i32 [ 40, [[ENTRY:%.*]] ], [ [[DOTINT:%.*]], [[BB]] ]
+; CHECK-NEXT:    [[INDVAR_CONV:%.*]] = sitofp i32 [[IV_INT]] to double
+; CHECK-NEXT:    [[TMP0:%.*]] = tail call i32 @foo(double [[INDVAR_CONV]]) #0
+; CHECK-NEXT:    [[DOTINT]] = add nsw i32 [[IV_INT]], -1
+; CHECK-NEXT:    br i1 false, label [[BB]], label [[RETURN:%.*]]
+; CHECK:       return:
+; CHECK-NEXT:    ret void
+;
 entry:
-	br label %bb
+  br label %bb
 
 bb:		; preds = %bb, %entry
-	%x.0.reg2mem.0 = phi double [ 40.000000e+00, %entry ], [ %1, %bb ]		; <double> [#uses=2]
-	%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind		; <i32> [#uses=0]
-	%1 = fadd double %x.0.reg2mem.0, -1.000000e+00		; <double> [#uses=2]
-	%2 = fcmp olt double %1, 1.000000e+00		; <i1> [#uses=1]
-	br i1 %2, label %bb, label %return
+  %iv = phi double [ 40.000000e+00, %entry ], [ %1, %bb ]
+  %0 = tail call i32 @foo(double %iv) nounwind
+  %1 = fadd double %iv, -1.000000e+00
+  %2 = fcmp olt double %1, 1.000000e+00
+  br i1 %2, label %bb, label %return
 
 return:
-	ret void
-; CHECK-LABEL: @test4(
-; CHECK-NOT: cmp
-; CHECK: br i1 false
+  ret void
 }
 
 ; PR6761
 define void @test5() nounwind {
 ; <label>:0
+; CHECK-LABEL: @test5(
+; CHECK-NEXT:    br label [[TMP1:%.*]]
+; CHECK:       1:
+; CHECK-NEXT:    [[DOTINT:%.*]] = phi i32 [ 9, [[TMP0:%.*]] ], [ [[DOTINT1:%.*]], [[TMP1]] ]
+; CHECK-NEXT:    [[TMP2:%.*]] = tail call i32 @foo(double 0.000000e+00)
+; CHECK-NEXT:    [[DOTINT1]] = add nsw i32 [[DOTINT]], -1
+; CHECK-NEXT:    [[TMP3:%.*]] = icmp slt i32 [[DOTINT1]], 0
+; CHECK-NEXT:    br i1 [[TMP3]], label [[EXIT:%.*]], label [[TMP1]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret void
+;
   br label %1
 
-; <label>:1                                       ; preds = %1, %0
-  %2 = phi double [ 9.000000e+00, %0 ], [ %4, %1 ] ; <double> [#uses=1]
-  %3 = tail call i32 @foo(double 0.0)              ; <i32> [#uses=0]
-  %4 = fadd double %2, -1.000000e+00              ; <double> [#uses=2]
-  %5 = fcmp ult double %4, 0.000000e+00           ; <i1> [#uses=1]
+; <label>:1
+  %2 = phi double [ 9.000000e+00, %0 ], [ %4, %1 ]
+  %3 = tail call i32 @foo(double 0.0)
+  %4 = fadd double %2, -1.000000e+00
+  %5 = fcmp ult double %4, 0.000000e+00
   br i1 %5, label %exit, label %1
 
 exit:
   ret void
-
-; CHECK-LABEL: @test5(
-; CHECK: icmp slt i32 {{.*}}, 0
-; CHECK-NEXT: br i1
 }