1 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=core-avx-i -mattr=+rdseed | FileCheck %s 2 3 declare {i16, i32} @llvm.x86.rdseed.16() 4 declare {i32, i32} @llvm.x86.rdseed.32() 5 declare {i64, i32} @llvm.x86.rdseed.64() 6 7 define i32 @_rdseed16_step(i16* %random_val) { 8 %call = call {i16, i32} @llvm.x86.rdseed.16() 9 %randval = extractvalue {i16, i32} %call, 0 10 store i16 %randval, i16* %random_val 11 %isvalid = extractvalue {i16, i32} %call, 1 12 ret i32 %isvalid 13 ; CHECK-LABEL: _rdseed16_step: 14 ; CHECK: rdseedw %ax 15 ; CHECK: movzwl %ax, %ecx 16 ; CHECK: movl $1, %eax 17 ; CHECK: cmovael %ecx, %eax 18 ; CHECK: movw %cx, (%r[[A0:di|cx]]) 19 ; CHECK: ret 20 } 21 22 define i32 @_rdseed32_step(i32* %random_val) { 23 %call = call {i32, i32} @llvm.x86.rdseed.32() 24 %randval = extractvalue {i32, i32} %call, 0 25 store i32 %randval, i32* %random_val 26 %isvalid = extractvalue {i32, i32} %call, 1 27 ret i32 %isvalid 28 ; CHECK-LABEL: _rdseed32_step: 29 ; CHECK: rdseedl %e[[T0:[a-z]+]] 30 ; CHECK: movl $1, %eax 31 ; CHECK: cmovael %e[[T0]], %eax 32 ; CHECK: movl %e[[T0]], (%r[[A0]]) 33 ; CHECK: ret 34 } 35 36 define i32 @_rdseed64_step(i64* %random_val) { 37 %call = call {i64, i32} @llvm.x86.rdseed.64() 38 %randval = extractvalue {i64, i32} %call, 0 39 store i64 %randval, i64* %random_val 40 %isvalid = extractvalue {i64, i32} %call, 1 41 ret i32 %isvalid 42 ; CHECK-LABEL: _rdseed64_step: 43 ; CHECK: rdseedq %r[[T1:[a-z]+]] 44 ; CHECK: movl $1, %eax 45 ; CHECK: cmovael %e[[T1]], %eax 46 ; CHECK: movq %r[[T1]], (%r[[A0]]) 47 ; CHECK: ret 48 } 49
