diff options
| -rw-r--r-- | llvm/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll b/llvm/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll index acc29764538..6ccc6155e4c 100644 --- a/llvm/test/Transforms/InstCombine/select-cmp-cttz-ctlz.ll +++ b/llvm/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) |
