llvm/test/CodeGen/ARM/hints.ll
Saleem Abdulrasool 04f826c062 ARM: provide a new generic hint intrinsic
Introduce the llvm.arm.hint(i32) intrinsic that can be used to inject hints into
the instruction stream. This is particularly useful for generating IR from a
compiler where the user may inject an intrinsic (e.g. __yield). These are then
pattern substituted into the correct instruction which already existed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207242 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-25 17:24:24 +00:00

70 lines
1.1 KiB
LLVM

; RUN: llc -mtriple armv7-eabi -o - %s | FileCheck %s
; RUN: llc -mtriple thumbv6m-eabi -o - %s | FileCheck %s
; RUN: llc -mtriple thumbv7-eabi -o - %s | FileCheck %s
declare void @llvm.arm.hint(i32) nounwind
define void @hint_nop() {
entry:
tail call void @llvm.arm.hint(i32 0) nounwind
ret void
}
; CHECK-LABEL: hint_nop
; CHECK: nop
define void @hint_yield() {
entry:
tail call void @llvm.arm.hint(i32 1) nounwind
ret void
}
; CHECK-LABEL: hint_yield
; CHECK: yield
define void @hint_wfe() {
entry:
tail call void @llvm.arm.hint(i32 2) nounwind
ret void
}
; CHECK-LABEL: hint_wfe
; CHECK: wfe
define void @hint_wfi() {
entry:
tail call void @llvm.arm.hint(i32 3) nounwind
ret void
}
; CHECK-LABEL: hint_wfi
; CHECK: wfi
define void @hint_sev() {
entry:
tail call void @llvm.arm.hint(i32 4) nounwind
ret void
}
; CHECK-LABEL: hint_sev
; CHECK: sev
define void @hint_sevl() {
entry:
tail call void @llvm.arm.hint(i32 5) nounwind
ret void
}
; CHECK-LABEL: hint_sevl
; CHECK: hint #5
define void @hint_undefined() {
entry:
tail call void @llvm.arm.hint(i32 8) nounwind
ret void
}
; CHECK-LABEL: hint_undefined
; CHECK: hint #8