[llvm] b3e1394 - [BDCE] Add tests for min/max intrinsincs (NFC)

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2020-09-04T22:41:52+02:00
New Revision: b3e139444f41e5c281972b4002c09ee0500831f6

URL: https://github.com/llvm/llvm-project/commit/b3e139444f41e5c281972b4002c09ee0500831f6
DIFF: https://github.com/llvm/llvm-project/commit/b3e139444f41e5c281972b4002c09ee0500831f6.diff

LOG: [BDCE] Add tests for min/max intrinsincs (NFC)

Added: 
    llvm/test/Transforms/BDCE/intrinsics.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/Transforms/BDCE/intrinsics.ll b/llvm/test/Transforms/BDCE/intrinsics.ll
new file mode 100644
index 000000000000..5a186f01fd29
--- /dev/null
+++ b/llvm/test/Transforms/BDCE/intrinsics.ll
@@ -0,0 +1,83 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -bdce < %s | FileCheck %s
+
+declare i8 @llvm.umax.i8(i8, i8)
+declare i8 @llvm.umin.i8(i8, i8)
+declare i8 @llvm.smax.i8(i8, i8)
+declare i8 @llvm.smin.i8(i8, i8)
+
+define i8 @umax(i8 %x, i8 %y, i1 %a, i1 %b) {
+; CHECK-LABEL: @umax(
+; CHECK-NEXT:    [[A2:%.*]] = zext i1 [[A:%.*]] to i8
+; CHECK-NEXT:    [[B2:%.*]] = zext i1 [[B:%.*]] to i8
+; CHECK-NEXT:    [[X2:%.*]] = or i8 [[X:%.*]], [[A2]]
+; CHECK-NEXT:    [[Y2:%.*]] = or i8 [[Y:%.*]], [[B2]]
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X2]], i8 [[Y2]])
+; CHECK-NEXT:    [[R:%.*]] = lshr i8 [[M]], 1
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %a2 = zext i1 %a to i8
+  %b2 = zext i1 %b to i8
+  %x2 = or i8 %x, %a2
+  %y2 = or i8 %y, %b2
+  %m = call i8 @llvm.umax.i8(i8 %x2, i8 %y2)
+  %r = lshr i8 %m, 1
+  ret i8 %r
+}
+
+define i8 @umin(i8 %x, i8 %y, i1 %a, i1 %b) {
+; CHECK-LABEL: @umin(
+; CHECK-NEXT:    [[A2:%.*]] = zext i1 [[A:%.*]] to i8
+; CHECK-NEXT:    [[B2:%.*]] = zext i1 [[B:%.*]] to i8
+; CHECK-NEXT:    [[X2:%.*]] = or i8 [[X:%.*]], [[A2]]
+; CHECK-NEXT:    [[Y2:%.*]] = or i8 [[Y:%.*]], [[B2]]
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.umin.i8(i8 [[X2]], i8 [[Y2]])
+; CHECK-NEXT:    [[R:%.*]] = lshr i8 [[M]], 1
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %a2 = zext i1 %a to i8
+  %b2 = zext i1 %b to i8
+  %x2 = or i8 %x, %a2
+  %y2 = or i8 %y, %b2
+  %m = call i8 @llvm.umin.i8(i8 %x2, i8 %y2)
+  %r = lshr i8 %m, 1
+  ret i8 %r
+}
+
+define i8 @smax(i8 %x, i8 %y, i1 %a, i1 %b) {
+; CHECK-LABEL: @smax(
+; CHECK-NEXT:    [[A2:%.*]] = zext i1 [[A:%.*]] to i8
+; CHECK-NEXT:    [[B2:%.*]] = zext i1 [[B:%.*]] to i8
+; CHECK-NEXT:    [[X2:%.*]] = or i8 [[X:%.*]], [[A2]]
+; CHECK-NEXT:    [[Y2:%.*]] = or i8 [[Y:%.*]], [[B2]]
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smax.i8(i8 [[X2]], i8 [[Y2]])
+; CHECK-NEXT:    [[R:%.*]] = lshr i8 [[M]], 1
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %a2 = zext i1 %a to i8
+  %b2 = zext i1 %b to i8
+  %x2 = or i8 %x, %a2
+  %y2 = or i8 %y, %b2
+  %m = call i8 @llvm.smax.i8(i8 %x2, i8 %y2)
+  %r = lshr i8 %m, 1
+  ret i8 %r
+}
+
+define i8 @smin(i8 %x, i8 %y, i1 %a, i1 %b) {
+; CHECK-LABEL: @smin(
+; CHECK-NEXT:    [[A2:%.*]] = zext i1 [[A:%.*]] to i8
+; CHECK-NEXT:    [[B2:%.*]] = zext i1 [[B:%.*]] to i8
+; CHECK-NEXT:    [[X2:%.*]] = or i8 [[X:%.*]], [[A2]]
+; CHECK-NEXT:    [[Y2:%.*]] = or i8 [[Y:%.*]], [[B2]]
+; CHECK-NEXT:    [[M:%.*]] = call i8 @llvm.smin.i8(i8 [[X2]], i8 [[Y2]])
+; CHECK-NEXT:    [[R:%.*]] = lshr i8 [[M]], 1
+; CHECK-NEXT:    ret i8 [[R]]
+;
+  %a2 = zext i1 %a to i8
+  %b2 = zext i1 %b to i8
+  %x2 = or i8 %x, %a2
+  %y2 = or i8 %y, %b2
+  %m = call i8 @llvm.smin.i8(i8 %x2, i8 %y2)
+  %r = lshr i8 %m, 1
+  ret i8 %r
+}