From 7c4fa28e5cf08f53c1af68121a40e052805d963e Mon Sep 17 00:00:00 2001
From: Roman Lebedev <lebedev.ri@gmail.com>
Date: Fri, 18 Oct 2019 20:36:19 +0000
Subject: [PATCH] [NFC][CVP] Some tests for `mul` no-wrap deduction

llvm-svn: 375285
---
 .../Transforms/CorrelatedValuePropagation/mul.ll   | 175 +++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 llvm/test/Transforms/CorrelatedValuePropagation/mul.ll

diff --git a/llvm/test/Transforms/CorrelatedValuePropagation/mul.ll b/llvm/test/Transforms/CorrelatedValuePropagation/mul.ll
new file mode 100644
index 0000000..786c1b5
--- /dev/null
+++ b/llvm/test/Transforms/CorrelatedValuePropagation/mul.ll
@@ -0,0 +1,175 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -correlated-propagation -cvp-dont-add-nowrap-flags=false -S | FileCheck %s
+
+define i8 @test0(i8 %a) {
+; CHECK-LABEL: @test0(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 3
+; CHECK-NEXT:    br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[MUL:%.*]] = mul i8 [[A]], 50
+; CHECK-NEXT:    ret i8 [[MUL]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret i8 0
+;
+entry:
+  %cmp = icmp ult i8 %a, 3
+  br i1 %cmp, label %bb, label %exit
+
+bb:
+  %mul = mul i8 %a, 50
+  ret i8 %mul
+
+exit:
+  ret i8 0
+}
+
+define i8 @test1(i8 %a) {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 4
+; CHECK-NEXT:    br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[MUL:%.*]] = mul i8 [[A]], 50
+; CHECK-NEXT:    ret i8 [[MUL]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret i8 0
+;
+entry:
+  %cmp = icmp ult i8 %a, 4
+  br i1 %cmp, label %bb, label %exit
+
+bb:
+  %mul = mul i8 %a, 50
+  ret i8 %mul
+
+exit:
+  ret i8 0
+}
+
+define i8 @test2(i8 %a) {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 6
+; CHECK-NEXT:    br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[MUL:%.*]] = mul i8 [[A]], 50
+; CHECK-NEXT:    ret i8 [[MUL]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret i8 0
+;
+entry:
+  %cmp = icmp ult i8 %a, 6
+  br i1 %cmp, label %bb, label %exit
+
+bb:
+  %mul = mul i8 %a, 50
+  ret i8 %mul
+
+exit:
+  ret i8 0
+}
+
+define i8 @test3(i8 %a) {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i8 [[A:%.*]], 7
+; CHECK-NEXT:    br i1 [[CMP]], label [[BB:%.*]], label [[EXIT:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[MUL:%.*]] = mul i8 [[A]], 50
+; CHECK-NEXT:    ret i8 [[MUL]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret i8 0
+;
+entry:
+  %cmp = icmp ult i8 %a, 7
+  br i1 %cmp, label %bb, label %exit
+
+bb:
+  %mul = mul i8 %a, 50
+  ret i8 %mul
+
+exit:
+  ret i8 0
+}
+
+define i8 @test4(i8 %a) {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i8 [[A:%.*]], 3
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp sgt i8 [[A]], -3
+; CHECK-NEXT:    [[COND:%.*]] = and i1 [[CMP1]], [[CMP2]]
+; CHECK-NEXT:    br i1 [[COND]], label [[BB:%.*]], label [[EXIT:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[MUL:%.*]] = mul i8 [[A]], 50
+; CHECK-NEXT:    ret i8 [[MUL]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret i8 0
+;
+entry:
+  %cmp1 = icmp slt i8 %a, 3
+  %cmp2 = icmp sgt i8 %a, -3
+  %cond = and i1 %cmp1, %cmp2
+  br i1 %cond, label %bb, label %exit
+
+bb:
+  %mul = mul i8 %a, 50
+  ret i8 %mul
+
+exit:
+  ret i8 0
+}
+
+define i8 @test5(i8 %a) {
+; CHECK-LABEL: @test5(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i8 [[A:%.*]], 3
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp sgt i8 [[A]], -4
+; CHECK-NEXT:    [[COND:%.*]] = and i1 [[CMP1]], [[CMP2]]
+; CHECK-NEXT:    br i1 [[COND]], label [[BB:%.*]], label [[EXIT:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[MUL:%.*]] = mul i8 [[A]], 50
+; CHECK-NEXT:    ret i8 [[MUL]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret i8 0
+;
+entry:
+  %cmp1 = icmp slt i8 %a, 3
+  %cmp2 = icmp sgt i8 %a, -4
+  %cond = and i1 %cmp1, %cmp2
+  br i1 %cond, label %bb, label %exit
+
+bb:
+  %mul = mul i8 %a, 50
+  ret i8 %mul
+
+exit:
+  ret i8 0
+}
+
+define i8 @test6(i8 %a) {
+; CHECK-LABEL: @test6(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i8 [[A:%.*]], 4
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp sgt i8 [[A]], -3
+; CHECK-NEXT:    [[COND:%.*]] = and i1 [[CMP1]], [[CMP2]]
+; CHECK-NEXT:    br i1 [[COND]], label [[BB:%.*]], label [[EXIT:%.*]]
+; CHECK:       bb:
+; CHECK-NEXT:    [[MUL:%.*]] = mul i8 [[A]], 50
+; CHECK-NEXT:    ret i8 [[MUL]]
+; CHECK:       exit:
+; CHECK-NEXT:    ret i8 0
+;
+entry:
+  %cmp1 = icmp slt i8 %a, 4
+  %cmp2 = icmp sgt i8 %a, -3
+  %cond = and i1 %cmp1, %cmp2
+  br i1 %cond, label %bb, label %exit
+
+bb:
+  %mul = mul i8 %a, 50
+  ret i8 %mul
+
+exit:
+  ret i8 0
+}
-- 
2.7.4