| Logan Chien | 0a43abc | 2015-07-13 15:37:30 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -mtriple arm-eabi -mattr=+v6t2 | FileCheck %s |
| 2 | ; RUN: llc < %s -mtriple arm-eabi -mattr=+v6t2 -mattr=+neon | FileCheck %s |
| 3 | |
| 4 | ; This test checks the @llvm.cttz.* intrinsics for integers. |
| 5 | |
| 6 | declare i8 @llvm.cttz.i8(i8, i1) |
| 7 | declare i16 @llvm.cttz.i16(i16, i1) |
| 8 | declare i32 @llvm.cttz.i32(i32, i1) |
| 9 | declare i64 @llvm.cttz.i64(i64, i1) |
| 10 | |
| 11 | ;------------------------------------------------------------------------------ |
| 12 | |
| 13 | define i8 @test_i8(i8 %a) { |
| 14 | ; CHECK-LABEL: test_i8: |
| 15 | ; CHECK: orr [[REG:r[0-9]+]], [[REG]], #256 |
| 16 | ; CHECK: rbit |
| 17 | ; CHECK: clz |
| 18 | %tmp = call i8 @llvm.cttz.i8(i8 %a, i1 false) |
| 19 | ret i8 %tmp |
| 20 | } |
| 21 | |
| 22 | define i16 @test_i16(i16 %a) { |
| 23 | ; CHECK-LABEL: test_i16: |
| 24 | ; CHECK: orr [[REG:r[0-9]+]], [[REG]], #65536 |
| 25 | ; CHECK: rbit |
| 26 | ; CHECK: clz |
| 27 | %tmp = call i16 @llvm.cttz.i16(i16 %a, i1 false) |
| 28 | ret i16 %tmp |
| 29 | } |
| 30 | |
| 31 | define i32 @test_i32(i32 %a) { |
| 32 | ; CHECK-LABEL: test_i32: |
| 33 | ; CHECK: rbit |
| 34 | ; CHECK: clz |
| 35 | %tmp = call i32 @llvm.cttz.i32(i32 %a, i1 false) |
| 36 | ret i32 %tmp |
| 37 | } |
| 38 | |
| 39 | define i64 @test_i64(i64 %a) { |
| 40 | ; CHECK-LABEL: test_i64: |
| 41 | ; CHECK: rbit |
| 42 | ; CHECK: rbit |
| 43 | ; CHECK: cmp |
| 44 | ; CHECK: clz |
| 45 | ; CHECK: add |
| 46 | ; CHECK: clzne |
| 47 | %tmp = call i64 @llvm.cttz.i64(i64 %a, i1 false) |
| 48 | ret i64 %tmp |
| 49 | } |
| 50 | |
| 51 | ;------------------------------------------------------------------------------ |
| 52 | |
| 53 | define i8 @test_i8_zero_undef(i8 %a) { |
| 54 | ; CHECK-LABEL: test_i8_zero_undef: |
| 55 | ; CHECK-NOT: orr |
| 56 | ; CHECK: rbit |
| 57 | ; CHECK: clz |
| 58 | %tmp = call i8 @llvm.cttz.i8(i8 %a, i1 true) |
| 59 | ret i8 %tmp |
| 60 | } |
| 61 | |
| 62 | define i16 @test_i16_zero_undef(i16 %a) { |
| 63 | ; CHECK-LABEL: test_i16_zero_undef: |
| 64 | ; CHECK-NOT: orr |
| 65 | ; CHECK: rbit |
| 66 | ; CHECK: clz |
| 67 | %tmp = call i16 @llvm.cttz.i16(i16 %a, i1 true) |
| 68 | ret i16 %tmp |
| 69 | } |
| 70 | |
| 71 | |
| 72 | define i32 @test_i32_zero_undef(i32 %a) { |
| 73 | ; CHECK-LABEL: test_i32_zero_undef: |
| 74 | ; CHECK: rbit |
| 75 | ; CHECK: clz |
| 76 | %tmp = call i32 @llvm.cttz.i32(i32 %a, i1 true) |
| 77 | ret i32 %tmp |
| 78 | } |
| 79 | |
| 80 | define i64 @test_i64_zero_undef(i64 %a) { |
| 81 | ; CHECK-LABEL: test_i64_zero_undef: |
| 82 | ; CHECK: rbit |
| 83 | ; CHECK: rbit |
| 84 | ; CHECK: cmp |
| 85 | ; CHECK: clz |
| 86 | ; CHECK: add |
| 87 | ; CHECK: clzne |
| 88 | %tmp = call i64 @llvm.cttz.i64(i64 %a, i1 true) |
| 89 | ret i64 %tmp |
| 90 | } |