[InstCombine] add tests for missing add canonicalization; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299539 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/add.ll b/test/Transforms/InstCombine/add.ll
index 94e18376ad88bfadd1513138d3ccab9fb37a84ff..84a48ece63f292dfadae4ebcb454f49ac5e2a023 100644 (file)
--- a/test/Transforms/InstCombine/add.ll
+++ b/test/Transforms/InstCombine/add.ll
@@ -1,6 +1,32 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -instcombine -S | FileCheck %s
 
+; TODO: This should be canonicalized to either a select or xor+zext.
+
+define i32 @select_0_or_1_from_bool(i1 %x) {
+; CHECK-LABEL: @select_0_or_1_from_bool(
+; CHECK-NEXT:    [[EXT:%.*]] = sext i1 %x to i32
+; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[EXT]], 1
+; CHECK-NEXT:    ret i32 [[ADD]]
+;
+  %ext = sext i1 %x to i32
+  %add = add i32 %ext, 1
+  ret i32 %add
+}
+
+; TODO: This should be canonicalized to either a select or xor+zext.
+
+define <2 x i32> @select_0_or_1_from_bool_vec(<2 x i1> %x) {
+; CHECK-LABEL: @select_0_or_1_from_bool_vec(
+; CHECK-NEXT:    [[EXT:%.*]] = sext <2 x i1> %x to <2 x i32>
+; CHECK-NEXT:    [[ADD:%.*]] = add nsw <2 x i32> [[EXT]], <i32 1, i32 1>
+; CHECK-NEXT:    ret <2 x i32> [[ADD]]
+;
+  %ext = sext <2 x i1> %x to <2 x i32>
+  %add = add <2 x i32> %ext, <i32 1, i32 1>
+  ret <2 x i32> %add
+}
+
 define i32 @test1(i32 %A) {
 ; CHECK-LABEL: @test1(
 ; CHECK-NEXT:    ret i32 %A