[InstSimplify] Fold another Select with And/Or pattern
Summary: Proof: https://rise4fun.com/Alive/L5J
Reviewers: lebedev.ri, spatel
Reviewed By: spatel
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D49975
llvm-svn: 338383
diff --git a/llvm/test/Transforms/InstSimplify/select-or-cmp.ll b/llvm/test/Transforms/InstSimplify/select-or-cmp.ll
index 1810beb..ea29bff 100644
--- a/llvm/test/Transforms/InstSimplify/select-or-cmp.ll
+++ b/llvm/test/Transforms/InstSimplify/select-or-cmp.ll
@@ -36,11 +36,7 @@
define i32 @select_or_icmp_alt(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @select_or_icmp_alt(
-; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], [[Z:%.*]]
-; CHECK-NEXT: [[B:%.*]] = icmp ne i32 [[Y:%.*]], [[Z]]
-; CHECK-NEXT: [[C:%.*]] = or i1 [[A]], [[B]]
-; CHECK-NEXT: [[D:%.*]] = select i1 [[C]], i32 [[X]], i32 [[Z]]
-; CHECK-NEXT: ret i32 [[D]]
+; CHECK-NEXT: ret i32 [[X:%.*]]
;
%A = icmp ne i32 %x, %z
%B = icmp ne i32 %y, %z
@@ -51,11 +47,7 @@
define i32 @select_or_icmp_alt2(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @select_or_icmp_alt2(
-; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X:%.*]], [[Z:%.*]]
-; CHECK-NEXT: [[B:%.*]] = icmp ne i32 [[Y:%.*]], [[Z]]
-; CHECK-NEXT: [[C:%.*]] = or i1 [[A]], [[B]]
-; CHECK-NEXT: [[D:%.*]] = select i1 [[C]], i32 [[Y]], i32 [[Z]]
-; CHECK-NEXT: ret i32 [[D]]
+; CHECK-NEXT: ret i32 [[Y:%.*]]
;
%A = icmp ne i32 %x, %z
%B = icmp ne i32 %y, %z
@@ -66,11 +58,7 @@
define i32 @select_or_icmp_inv_alt(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @select_or_icmp_inv_alt(
-; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[Z:%.*]], [[X:%.*]]
-; CHECK-NEXT: [[B:%.*]] = icmp ne i32 [[Z]], [[Y:%.*]]
-; CHECK-NEXT: [[C:%.*]] = or i1 [[A]], [[B]]
-; CHECK-NEXT: [[D:%.*]] = select i1 [[C]], i32 [[X]], i32 [[Z]]
-; CHECK-NEXT: ret i32 [[D]]
+; CHECK-NEXT: ret i32 [[X:%.*]]
;
%A = icmp ne i32 %z, %x
%B = icmp ne i32 %z, %y
@@ -81,11 +69,7 @@
define i32 @select_or_inv_icmp_alt(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @select_or_inv_icmp_alt(
-; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[Z:%.*]], [[X:%.*]]
-; CHECK-NEXT: [[B:%.*]] = icmp ne i32 [[Z]], [[Y:%.*]]
-; CHECK-NEXT: [[C:%.*]] = or i1 [[B]], [[A]]
-; CHECK-NEXT: [[D:%.*]] = select i1 [[C]], i32 [[X]], i32 [[Z]]
-; CHECK-NEXT: ret i32 [[D]]
+; CHECK-NEXT: ret i32 [[X:%.*]]
;
%A = icmp ne i32 %z, %x
%B = icmp ne i32 %z, %y
@@ -96,11 +80,7 @@
define <2 x i8> @select_or_icmp_alt_vec(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
; CHECK-LABEL: @select_or_icmp_alt_vec(
-; CHECK-NEXT: [[A:%.*]] = icmp ne <2 x i8> [[X:%.*]], [[Z:%.*]]
-; CHECK-NEXT: [[B:%.*]] = icmp ne <2 x i8> [[Y:%.*]], [[Z]]
-; CHECK-NEXT: [[C:%.*]] = or <2 x i1> [[A]], [[B]]
-; CHECK-NEXT: [[D:%.*]] = select <2 x i1> [[C]], <2 x i8> [[X]], <2 x i8> [[Z]]
-; CHECK-NEXT: ret <2 x i8> [[D]]
+; CHECK-NEXT: ret <2 x i8> [[X:%.*]]
;
%A = icmp ne <2 x i8> %x, %z
%B = icmp ne <2 x i8> %y, %z