1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=skylake-avx512 | FileCheck %s --check-prefix=CHECK-BMI2 3; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=x86-64-v4 | FileCheck %s --check-prefix=CHECK-BMI2 4; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+bmi | FileCheck %s --check-prefix=CHECK-BMI 5 6declare i32 @llvm.cttz.i32(i32, i1 immarg) 7define void @test_61038(ptr %tmp_buffer) { 8; CHECK-BMI2-LABEL: test_61038: 9; CHECK-BMI2: # %bb.0: # %entry 10; CHECK-BMI2-NEXT: tzcntl %eax, %eax 11; CHECK-BMI2-NEXT: movabsq $8589934591, %rcx # imm = 0x1FFFFFFFF 12; CHECK-BMI2-NEXT: movq %rcx, %rdx 13; CHECK-BMI2-NEXT: btcq %rax, %rdx 14; CHECK-BMI2-NEXT: xorl %eax, %eax 15; CHECK-BMI2-NEXT: cmpq $64, %rdx 16; CHECK-BMI2-NEXT: shrxq %rdx, %rcx, %rcx 17; CHECK-BMI2-NEXT: cmovael %eax, %ecx 18; CHECK-BMI2-NEXT: movl %ecx, (%rdi) 19; CHECK-BMI2-NEXT: retq 20; 21; CHECK-BMI-LABEL: test_61038: 22; CHECK-BMI: # %bb.0: # %entry 23; CHECK-BMI-NEXT: tzcntl %eax, %eax 24; CHECK-BMI-NEXT: movabsq $8589934591, %rdx # imm = 0x1FFFFFFFF 25; CHECK-BMI-NEXT: movq %rdx, %rcx 26; CHECK-BMI-NEXT: btcq %rax, %rcx 27; CHECK-BMI-NEXT: shrq %cl, %rdx 28; CHECK-BMI-NEXT: xorl %eax, %eax 29; CHECK-BMI-NEXT: cmpq $64, %rcx 30; CHECK-BMI-NEXT: cmovael %eax, %edx 31; CHECK-BMI-NEXT: movl %edx, (%rdi) 32; CHECK-BMI-NEXT: retq 33entry: 34 %0 = tail call i32 @llvm.cttz.i32(i32 poison, i1 false) 35 %1 = zext i32 %0 to i64 36 %2 = shl nuw nsw i64 1, %1 37 %3 = xor i64 %2, 8589934591 38 %4 = icmp ugt i64 %3, 63 39 %x11.op.i = lshr i64 8589934591, %3 40 %5 = trunc i64 %x11.op.i to i32 41 %6 = select i1 %4, i32 0, i32 %5 42 store i32 %6, ptr %tmp_buffer, align 4 43 ret void 44} 45