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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@349322 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll b/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll
index acc29764538fadbb585ec08ef14b0dd586b7ca41..6ccc6155e4c8661ccf6b725d5e26d8259021f3ab 100644 (file)
--- a/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll
+++ b/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll
@@ -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)