| Benjamin Kramer | d822892 | 2011-01-17 12:04:57 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=x86-64 < %s | FileCheck %s |
| 2 | |
| 3 | declare i64 @llvm.ctpop.i64(i64) nounwind readnone |
| 4 | |
| 5 | define i32 @test1(i64 %x) nounwind readnone { |
| 6 | %count = tail call i64 @llvm.ctpop.i64(i64 %x) |
| 7 | %cast = trunc i64 %count to i32 |
| 8 | %cmp = icmp ugt i32 %cast, 1 |
| 9 | %conv = zext i1 %cmp to i32 |
| 10 | ret i32 %conv |
| 11 | ; CHECK: test1: |
| NAKAMURA Takumi | e51a69c | 2011-02-22 07:19:46 +0000 | [diff] [blame^] | 12 | ; CHECK: leaq -1([[A0:%rdi|%rcx]]) |
| Benjamin Kramer | d822892 | 2011-01-17 12:04:57 +0000 | [diff] [blame] | 13 | ; CHECK-NEXT: testq |
| 14 | ; CHECK-NEXT: setne |
| 15 | ; CHECK: ret |
| 16 | } |
| 17 | |
| 18 | |
| 19 | define i32 @test2(i64 %x) nounwind readnone { |
| 20 | %count = tail call i64 @llvm.ctpop.i64(i64 %x) |
| Benjamin Kramer | c9b6a3e | 2011-01-17 18:00:28 +0000 | [diff] [blame] | 21 | %cmp = icmp ult i64 %count, 2 |
| Benjamin Kramer | d822892 | 2011-01-17 12:04:57 +0000 | [diff] [blame] | 22 | %conv = zext i1 %cmp to i32 |
| 23 | ret i32 %conv |
| 24 | ; CHECK: test2: |
| NAKAMURA Takumi | e51a69c | 2011-02-22 07:19:46 +0000 | [diff] [blame^] | 25 | ; CHECK: leaq -1([[A0]]) |
| Benjamin Kramer | d822892 | 2011-01-17 12:04:57 +0000 | [diff] [blame] | 26 | ; CHECK-NEXT: testq |
| 27 | ; CHECK-NEXT: sete |
| 28 | ; CHECK: ret |
| 29 | } |
| 30 | |
| Benjamin Kramer | c9b6a3e | 2011-01-17 18:00:28 +0000 | [diff] [blame] | 31 | define i32 @test3(i64 %x) nounwind readnone { |
| 32 | %count = tail call i64 @llvm.ctpop.i64(i64 %x) |
| 33 | %cast = trunc i64 %count to i6 ; Too small for 0-64 |
| 34 | %cmp = icmp ult i6 %cast, 2 |
| 35 | %conv = zext i1 %cmp to i32 |
| 36 | ret i32 %conv |
| 37 | ; CHECK: test3: |
| 38 | ; CHECK: cmpb $2 |
| 39 | ; CHECK: ret |
| 40 | } |