| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-linux-gnu | FileCheck %s |
| ; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-linux-gnu -mattr=+cssc | FileCheck %s -check-prefix=CHECK-CSSC |
| |
| define i4 @cttz4(i4 %x) { |
| ; CHECK-LABEL: cttz4: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: orr w8, w0, #0x10 |
| ; CHECK-NEXT: rbit w8, w8 |
| ; CHECK-NEXT: clz w0, w8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz4: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: orr w8, w0, #0x10 |
| ; CHECK-CSSC-NEXT: ctz w0, w8 |
| ; CHECK-CSSC-NEXT: ret |
| %ctz = tail call i4 @llvm.cttz.i4(i4 %x) |
| ret i4 %ctz |
| } |
| |
| define i8 @cttz8(i8 %x) { |
| ; CHECK-LABEL: cttz8: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: orr w8, w0, #0x100 |
| ; CHECK-NEXT: rbit w8, w8 |
| ; CHECK-NEXT: clz w0, w8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz8: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: orr w8, w0, #0x100 |
| ; CHECK-CSSC-NEXT: ctz w0, w8 |
| ; CHECK-CSSC-NEXT: ret |
| %ctz = tail call i8 @llvm.cttz.i8(i8 %x) |
| ret i8 %ctz |
| } |
| |
| define i16 @cttz16(i16 %x) { |
| ; CHECK-LABEL: cttz16: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: orr w8, w0, #0x10000 |
| ; CHECK-NEXT: rbit w8, w8 |
| ; CHECK-NEXT: clz w0, w8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz16: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: orr w8, w0, #0x10000 |
| ; CHECK-CSSC-NEXT: ctz w0, w8 |
| ; CHECK-CSSC-NEXT: ret |
| %ctz = tail call i16 @llvm.cttz.i16(i16 %x) |
| ret i16 %ctz |
| } |
| |
| define i17 @cttz17(i17 %x) { |
| ; CHECK-LABEL: cttz17: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: orr w8, w0, #0x20000 |
| ; CHECK-NEXT: rbit w8, w8 |
| ; CHECK-NEXT: clz w0, w8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz17: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: orr w8, w0, #0x20000 |
| ; CHECK-CSSC-NEXT: ctz w0, w8 |
| ; CHECK-CSSC-NEXT: ret |
| %ctz = tail call i17 @llvm.cttz.i17(i17 %x) |
| ret i17 %ctz |
| } |
| |
| define i32 @cttz32(i32 %x) nounwind readnone { |
| ; CHECK-LABEL: cttz32: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: rbit w8, w0 |
| ; CHECK-NEXT: clz w0, w8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz32: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: ctz w0, w0 |
| ; CHECK-CSSC-NEXT: ret |
| %ctz = tail call i32 @llvm.cttz.i32(i32 %x) |
| ret i32 %ctz |
| } |
| |
| define i64 @cttz64(i64 %x) nounwind readnone { |
| ; CHECK-LABEL: cttz64: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: rbit x8, x0 |
| ; CHECK-NEXT: clz x0, x8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz64: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: ctz x0, x0 |
| ; CHECK-CSSC-NEXT: ret |
| %ctz = tail call i64 @llvm.cttz.i64(i64 %x) |
| ret i64 %ctz |
| } |
| |
| define i128 @cttz128(i128 %x) nounwind readnone { |
| ; CHECK-LABEL: cttz128: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: rbit x8, x1 |
| ; CHECK-NEXT: rbit x9, x0 |
| ; CHECK-NEXT: cmp x0, #0 |
| ; CHECK-NEXT: mov x1, xzr |
| ; CHECK-NEXT: clz x8, x8 |
| ; CHECK-NEXT: clz x9, x9 |
| ; CHECK-NEXT: add x8, x8, #64 |
| ; CHECK-NEXT: csel x0, x9, x8, ne |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz128: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: ctz x8, x1 |
| ; CHECK-CSSC-NEXT: ctz x9, x0 |
| ; CHECK-CSSC-NEXT: cmp x0, #0 |
| ; CHECK-CSSC-NEXT: add x8, x8, #64 |
| ; CHECK-CSSC-NEXT: mov x1, xzr |
| ; CHECK-CSSC-NEXT: csel x0, x9, x8, ne |
| ; CHECK-CSSC-NEXT: ret |
| %ctz = tail call i128 @llvm.cttz.i128(i128 %x) |
| ret i128 %ctz |
| } |
| |
| define i32 @cttz32combine(i32 %x) nounwind readnone { |
| ; CHECK-LABEL: cttz32combine: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: rbit w8, w0 |
| ; CHECK-NEXT: clz w0, w8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz32combine: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: ctz w0, w0 |
| ; CHECK-CSSC-NEXT: ret |
| %rev = tail call i32 @llvm.bitreverse.i32(i32 %x) |
| %ctz = tail call i32 @llvm.ctlz.i32(i32 %rev) |
| ret i32 %ctz |
| } |
| |
| define i64 @cttz64combine(i64 %x) nounwind readnone { |
| ; CHECK-LABEL: cttz64combine: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: rbit x8, x0 |
| ; CHECK-NEXT: clz x0, x8 |
| ; CHECK-NEXT: ret |
| ; |
| ; CHECK-CSSC-LABEL: cttz64combine: |
| ; CHECK-CSSC: // %bb.0: |
| ; CHECK-CSSC-NEXT: ctz x0, x0 |
| ; CHECK-CSSC-NEXT: ret |
| %rev = tail call i64 @llvm.bitreverse.i64(i64 %x) |
| %ctz = tail call i64 @llvm.ctlz.i64(i64 %rev) |
| ret i64 %ctz |
| } |
| |
| declare i4 @llvm.cttz.i4(i4 %x) nounwind readnone |
| declare i8 @llvm.cttz.i8(i8 %x) nounwind readnone |
| declare i16 @llvm.cttz.i16(i16 %x) nounwind readnone |
| declare i17 @llvm.cttz.i17(i17 %x) nounwind readnone |
| declare i32 @llvm.cttz.i32(i32) nounwind readnone |
| declare i64 @llvm.cttz.i64(i64) nounwind readnone |
| declare i128 @llvm.cttz.i128(i128) nounwind readnone |
| |
| declare i32 @llvm.ctlz.i32(i32 %x) nounwind readnone |
| declare i32 @llvm.bitreverse.i32(i32 %x) nounwind readnone |
| declare i64 @llvm.ctlz.i64(i64 %x) nounwind readnone |
| declare i64 @llvm.bitreverse.i64(i64 %x) nounwind readnone |