Vendor import of llvm trunk r178860:

http://llvm.org/svn/llvm-project/llvm/trunk@178860

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 0000000..35de7eb
--- /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
+}