[llvm] r349322 - [InstCombine] Add cttz/ctlz + select non-bitwidth tests; NFC

[Nikita Popov via llvm-commits]

Author: nikic
Date: Sun Dec 16 15:48:18 2018
New Revision: 349322

URL: http://llvm.org/viewvc/llvm-project?rev=349322&view=rev
Log:
[InstCombine] Add cttz/ctlz + select non-bitwidth tests; NFC

Modified:
    llvm/trunk/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll

Modified: llvm/trunk/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll?rev=349322&r1=349321&r2=349322&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll Sun Dec 16 15:48:18 2018
@@ -343,6 +343,62 @@ define i128 @test8(i128 %x) {
   ret i128 %cond
 }
 
+define i32 @test_ctlz_not_bw(i32 %x) {
+; CHECK-LABEL: @test_ctlz_not_bw(
+; CHECK-NEXT:    [[CT:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[X]], 0
+; CHECK-NEXT:    [[RES:%.*]] = select i1 [[CMP]], i32 123, i32 [[CT]]
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %ct = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
+  %cmp = icmp ne i32 %x, 0
+  %res = select i1 %cmp, i32 %ct, i32 123
+  ret i32 %res
+}
+
+define i32 @test_ctlz_not_bw_multiuse(i32 %x) {
+; CHECK-LABEL: @test_ctlz_not_bw_multiuse(
+; CHECK-NEXT:    [[CT:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[X]], 0
+; CHECK-NEXT:    [[SEL:%.*]] = select i1 [[CMP]], i32 123, i32 [[CT]]
+; CHECK-NEXT:    [[RES:%.*]] = or i32 [[SEL]], [[CT]]
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %ct = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
+  %cmp = icmp ne i32 %x, 0
+  %sel = select i1 %cmp, i32 %ct, i32 123
+  %res = or i32 %sel, %ct
+  ret i32 %res
+}
+
+define i32 @test_cttz_not_bw(i32 %x) {
+; CHECK-LABEL: @test_cttz_not_bw(
+; CHECK-NEXT:    [[CT:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[X]], 0
+; CHECK-NEXT:    [[RES:%.*]] = select i1 [[CMP]], i32 123, i32 [[CT]]
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %ct = tail call i32 @llvm.cttz.i32(i32 %x, i1 false)
+  %cmp = icmp ne i32 %x, 0
+  %res = select i1 %cmp, i32 %ct, i32 123
+  ret i32 %res
+}
+
+define i32 @test_cttz_not_bw_multiuse(i32 %x) {
+; CHECK-LABEL: @test_cttz_not_bw_multiuse(
+; CHECK-NEXT:    [[CT:%.*]] = tail call i32 @llvm.cttz.i32(i32 [[X:%.*]], i1 false), !range !1
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[X]], 0
+; CHECK-NEXT:    [[SEL:%.*]] = select i1 [[CMP]], i32 123, i32 [[CT]]
+; CHECK-NEXT:    [[RES:%.*]] = or i32 [[SEL]], [[CT]]
+; CHECK-NEXT:    ret i32 [[RES]]
+;
+  %ct = tail call i32 @llvm.cttz.i32(i32 %x, i1 false)
+  %cmp = icmp ne i32 %x, 0
+  %sel = select i1 %cmp, i32 %ct, i32 123
+  %res = or i32 %sel, %ct
+  ret i32 %res
+}
+
 declare i16 @llvm.ctlz.i16(i16, i1)
 declare i32 @llvm.ctlz.i32(i32, i1)
 declare i64 @llvm.ctlz.i64(i64, i1)