[SimplifyCFG][NFC] Autogenerate PhiEliminate3.ll

llvm-svn: 371311

1 files changed, 71 insertions, 22 deletions

diff --git a/llvm/test/Transforms/SimplifyCFG/PhiEliminate3.ll b/llvm/test/Transforms/SimplifyCFG/PhiEliminate3.ll
index 3566b874c0b..5f498d62d7e 100644
--- a/llvm/test/Transforms/SimplifyCFG/PhiEliminate3.ll
+++ b/llvm/test/Transforms/SimplifyCFG/PhiEliminate3.ll
@@ -1,34 +1,83 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -simplifycfg -S -phi-node-folding-threshold=1 | FileCheck %s --check-prefix=ALL --check-prefix=CHECK-ONE
+; RUN: opt < %s -simplifycfg -S -phi-node-folding-threshold=2 | FileCheck %s --check-prefix=ALL --check-prefix=CHECK-TWO
+; RUN: opt < %s -simplifycfg -S -phi-node-folding-threshold=7 | FileCheck %s --check-prefix=ALL --check-prefix=CHECK-SEVEN
+
 ; Test merging of blocks containing complex expressions,
 ; with various folding thresholds
-;
-; RUN: opt < %s -simplifycfg -S -phi-node-folding-threshold=1 | grep N:
-; RUN: opt < %s -simplifycfg -S -phi-node-folding-threshold=2 | not grep N:
-; RUN: opt < %s -simplifycfg -S -phi-node-folding-threshold=2 | grep M:
-; RUN: opt < %s -simplifycfg -S -phi-node-folding-threshold=7 | not grep M:
-;
 
 define i32 @test(i1 %a, i1 %b, i32 %i, i32 %j, i32 %k) {
+; CHECK-ONE-LABEL: @test(
+; CHECK-ONE-NEXT:  entry:
+; CHECK-ONE-NEXT:    br i1 [[A:%.*]], label [[M:%.*]], label [[O:%.*]]
+; CHECK-ONE:       O:
+; CHECK-ONE-NEXT:    br i1 [[B:%.*]], label [[P:%.*]], label [[Q:%.*]]
+; CHECK-ONE:       P:
+; CHECK-ONE-NEXT:    [[IAJ:%.*]] = add i32 [[I:%.*]], [[J:%.*]]
+; CHECK-ONE-NEXT:    [[IAJAK:%.*]] = add i32 [[IAJ]], [[K:%.*]]
+; CHECK-ONE-NEXT:    br label [[N:%.*]]
+; CHECK-ONE:       Q:
+; CHECK-ONE-NEXT:    [[IXJ:%.*]] = xor i32 [[I]], [[J]]
+; CHECK-ONE-NEXT:    [[IXJXK:%.*]] = xor i32 [[IXJ]], [[K]]
+; CHECK-ONE-NEXT:    br label [[N]]
+; CHECK-ONE:       N:
+; CHECK-ONE-NEXT:    [[WP:%.*]] = phi i32 [ [[IAJAK]], [[P]] ], [ [[IXJXK]], [[Q]] ]
+; CHECK-ONE-NEXT:    [[WP2:%.*]] = add i32 [[WP]], [[WP]]
+; CHECK-ONE-NEXT:    br label [[M]]
+; CHECK-ONE:       M:
+; CHECK-ONE-NEXT:    [[W:%.*]] = phi i32 [ [[WP2]], [[N]] ], [ 2, [[ENTRY:%.*]] ]
+; CHECK-ONE-NEXT:    [[R:%.*]] = add i32 [[W]], 1
+; CHECK-ONE-NEXT:    ret i32 [[R]]
+;
+; CHECK-TWO-LABEL: @test(
+; CHECK-TWO-NEXT:  entry:
+; CHECK-TWO-NEXT:    br i1 [[A:%.*]], label [[M:%.*]], label [[O:%.*]]
+; CHECK-TWO:       O:
+; CHECK-TWO-NEXT:    [[IAJ:%.*]] = add i32 [[I:%.*]], [[J:%.*]]
+; CHECK-TWO-NEXT:    [[IAJAK:%.*]] = add i32 [[IAJ]], [[K:%.*]]
+; CHECK-TWO-NEXT:    [[IXJ:%.*]] = xor i32 [[I]], [[J]]
+; CHECK-TWO-NEXT:    [[IXJXK:%.*]] = xor i32 [[IXJ]], [[K]]
+; CHECK-TWO-NEXT:    [[WP:%.*]] = select i1 [[B:%.*]], i32 [[IAJAK]], i32 [[IXJXK]]
+; CHECK-TWO-NEXT:    [[WP2:%.*]] = add i32 [[WP]], [[WP]]
+; CHECK-TWO-NEXT:    br label [[M]]
+; CHECK-TWO:       M:
+; CHECK-TWO-NEXT:    [[W:%.*]] = phi i32 [ [[WP2]], [[O]] ], [ 2, [[ENTRY:%.*]] ]
+; CHECK-TWO-NEXT:    [[R:%.*]] = add i32 [[W]], 1
+; CHECK-TWO-NEXT:    ret i32 [[R]]
+;
+; CHECK-SEVEN-LABEL: @test(
+; CHECK-SEVEN-NEXT:  entry:
+; CHECK-SEVEN-NEXT:    [[IAJ:%.*]] = add i32 [[I:%.*]], [[J:%.*]]
+; CHECK-SEVEN-NEXT:    [[IAJAK:%.*]] = add i32 [[IAJ]], [[K:%.*]]
+; CHECK-SEVEN-NEXT:    [[IXJ:%.*]] = xor i32 [[I]], [[J]]
+; CHECK-SEVEN-NEXT:    [[IXJXK:%.*]] = xor i32 [[IXJ]], [[K]]
+; CHECK-SEVEN-NEXT:    [[WP:%.*]] = select i1 [[B:%.*]], i32 [[IAJAK]], i32 [[IXJXK]]
+; CHECK-SEVEN-NEXT:    [[WP2:%.*]] = add i32 [[WP]], [[WP]]
+; CHECK-SEVEN-NEXT:    [[W:%.*]] = select i1 [[A:%.*]], i32 2, i32 [[WP2]]
+; CHECK-SEVEN-NEXT:    [[R:%.*]] = add i32 [[W]], 1
+; CHECK-SEVEN-NEXT:    ret i32 [[R]]
+;
 entry:
-        br i1 %a, label %M, label %O
+  br i1 %a, label %M, label %O
 O:
-        br i1 %b, label %P, label %Q
+  br i1 %b, label %P, label %Q
 P:
-        %iaj = add i32 %i, %j
-        %iajak = add i32 %iaj, %k
-        br label %N
+  %iaj = add i32 %i, %j
+  %iajak = add i32 %iaj, %k
+  br label %N
 Q:
-        %ixj = xor i32 %i, %j
-        %ixjxk = xor i32 %ixj, %k
-        br label %N
+  %ixj = xor i32 %i, %j
+  %ixjxk = xor i32 %ixj, %k
+  br label %N
 N:
-        ; This phi should be foldable if threshold >= 2
-        %Wp = phi i32 [ %iajak, %P ], [ %ixjxk, %Q ]
-        %Wp2 = add i32 %Wp, %Wp
-        br label %M
+  ; This phi should be foldable if threshold >= 2
+  %Wp = phi i32 [ %iajak, %P ], [ %ixjxk, %Q ]
+  %Wp2 = add i32 %Wp, %Wp
+  br label %M
 M:
-        ; This phi should be foldable if threshold >= 7
-        %W = phi i32 [ %Wp2, %N ], [ 2, %entry ]
-        %R = add i32 %W, 1
-        ret i32 %R
+  ; This phi should be foldable if threshold >= 7
+  %W = phi i32 [ %Wp2, %N ], [ 2, %entry ]
+  %R = add i32 %W, 1
+  ret i32 %R
 }