diff options
Diffstat (limited to 'test/CodeGen/X86/rdseed.ll')
| -rw-r--r-- | test/CodeGen/X86/rdseed.ll | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/test/CodeGen/X86/rdseed.ll b/test/CodeGen/X86/rdseed.ll new file mode 100644 index 0000000000..35de7ebf74 --- /dev/null +++ b/test/CodeGen/X86/rdseed.ll @@ -0,0 +1,48 @@ +; RUN: llc < %s -march=x86-64 -mcpu=core-avx-i -mattr=+rdseed | FileCheck %s + +declare {i16, i32} @llvm.x86.rdseed.16() +declare {i32, i32} @llvm.x86.rdseed.32() +declare {i64, i32} @llvm.x86.rdseed.64() + +define i32 @_rdseed16_step(i16* %random_val) { + %call = call {i16, i32} @llvm.x86.rdseed.16() + %randval = extractvalue {i16, i32} %call, 0 + store i16 %randval, i16* %random_val + %isvalid = extractvalue {i16, i32} %call, 1 + ret i32 %isvalid +; CHECK: _rdseed16_step: +; CHECK: rdseedw %ax +; CHECK: movw %ax, (%r[[A0:di|cx]]) +; CHECK: movzwl %ax, %ecx +; CHECK: movl $1, %eax +; CHECK: cmovael %ecx, %eax +; CHECK: ret +} + +define i32 @_rdseed32_step(i32* %random_val) { + %call = call {i32, i32} @llvm.x86.rdseed.32() + %randval = extractvalue {i32, i32} %call, 0 + store i32 %randval, i32* %random_val + %isvalid = extractvalue {i32, i32} %call, 1 + ret i32 %isvalid +; CHECK: _rdseed32_step: +; CHECK: rdseedl %e[[T0:[a-z]+]] +; CHECK: movl %e[[T0]], (%r[[A0]]) +; CHECK: movl $1, %eax +; CHECK: cmovael %e[[T0]], %eax +; CHECK: ret +} + +define i32 @_rdseed64_step(i64* %random_val) { + %call = call {i64, i32} @llvm.x86.rdseed.64() + %randval = extractvalue {i64, i32} %call, 0 + store i64 %randval, i64* %random_val + %isvalid = extractvalue {i64, i32} %call, 1 + ret i32 %isvalid +; CHECK: _rdseed64_step: +; CHECK: rdseedq %r[[T1:[a-z]+]] +; CHECK: movq %r[[T1]], (%r[[A0]]) +; CHECK: movl $1, %eax +; CHECK: cmovael %e[[T1]], %eax +; CHECK: ret +} |