1 files changed, 65 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/mwaitx-schedule.ll b/llvm/test/CodeGen/X86/mwaitx-schedule.ll
new file mode 100644
index 00000000000..3ceef57b409
--- /dev/null
+++ b/llvm/test/CodeGen/X86/mwaitx-schedule.ll
@@ -0,0 +1,65 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=x86-64 -mattr=+mwaitx | FileCheck %s --check-prefix=GENERIC
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=bdver4 | FileCheck %s --check-prefix=BDVER4
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -print-schedule -mcpu=znver1 | FileCheck %s --check-prefix=ZNVER1
+
+define void @foo(i8* %P, i32 %E, i32 %H) nounwind {
+; GENERIC-LABEL: foo:
+; GENERIC:       # %bb.0:
+; GENERIC-NEXT:    leaq (%rdi), %rax # sched: [1:0.50]
+; GENERIC-NEXT:    movl %esi, %ecx # sched: [1:0.33]
+; GENERIC-NEXT:    monitorx # sched: [100:0.33]
+; GENERIC-NEXT:    retq # sched: [1:1.00]
+;
+; BDVER4-LABEL: foo:
+; BDVER4:       # %bb.0:
+; BDVER4-NEXT:    leaq (%rdi), %rax
+; BDVER4-NEXT:    movl %esi, %ecx
+; BDVER4-NEXT:    monitorx
+; BDVER4-NEXT:    retq
+;
+; ZNVER1-LABEL: foo:
+; ZNVER1:       # %bb.0:
+; ZNVER1-NEXT:    leaq (%rdi), %rax # sched: [1:0.25]
+; ZNVER1-NEXT:    movl %esi, %ecx # sched: [1:0.25]
+; ZNVER1-NEXT:    monitorx # sched: [100:?]
+; ZNVER1-NEXT:    retq # sched: [1:0.50]
+  tail call void @llvm.x86.monitorx(i8* %P, i32 %E, i32 %H)
+  ret void
+}
+declare void @llvm.x86.monitorx(i8*, i32, i32) nounwind
+
+define void @bar(i32 %E, i32 %H, i32 %C) nounwind {
+; GENERIC-LABEL: bar:
+; GENERIC:       # %bb.0:
+; GENERIC-NEXT:    pushq %rbx # sched: [5:1.00]
+; GENERIC-NEXT:    movl %edi, %ecx # sched: [1:0.33]
+; GENERIC-NEXT:    movl %esi, %eax # sched: [1:0.33]
+; GENERIC-NEXT:    movl %edx, %ebx # sched: [1:0.33]
+; GENERIC-NEXT:    mwaitx # sched: [100:0.33]
+; GENERIC-NEXT:    popq %rbx # sched: [6:0.50]
+; GENERIC-NEXT:    retq # sched: [1:1.00]
+;
+; BDVER4-LABEL: bar:
+; BDVER4:       # %bb.0:
+; BDVER4-NEXT:    pushq %rbx
+; BDVER4-NEXT:    movl %edi, %ecx
+; BDVER4-NEXT:    movl %esi, %eax
+; BDVER4-NEXT:    movl %edx, %ebx
+; BDVER4-NEXT:    mwaitx
+; BDVER4-NEXT:    popq %rbx
+; BDVER4-NEXT:    retq
+;
+; ZNVER1-LABEL: bar:
+; ZNVER1:       # %bb.0:
+; ZNVER1-NEXT:    pushq %rbx # sched: [1:0.50]
+; ZNVER1-NEXT:    movl %edi, %ecx # sched: [1:0.25]
+; ZNVER1-NEXT:    movl %esi, %eax # sched: [1:0.25]
+; ZNVER1-NEXT:    movl %edx, %ebx # sched: [1:0.25]
+; ZNVER1-NEXT:    mwaitx # sched: [100:?]
+; ZNVER1-NEXT:    popq %rbx # sched: [8:0.50]
+; ZNVER1-NEXT:    retq # sched: [1:0.50]
+  tail call void @llvm.x86.mwaitx(i32 %E, i32 %H, i32 %C)
+  ret void
+}
+declare void @llvm.x86.mwaitx(i32, i32, i32) nounwind