88 lines
2.2 KiB
LLVM
88 lines
2.2 KiB
LLVM
|
; Test data prefetching.
|
||
|
|
;
|
||
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
||
|
|
|
||
|
|
declare void @llvm.prefetch(i8*, i32, i32, i32)
|
||
|
|
|
||
|
|
@g = dso_local global [4096 x i8] zeroinitializer
|
||
|
|
|
||
|
|
; Check that instruction read prefetches are ignored.
|
||
|
|
define dso_local void @f1(i8 *%ptr) {
|
||
|
|
; CHECK-LABEL: f1:
|
||
|
|
; CHECK-NOT: %r2
|
||
|
|
; CHECK: br %r14
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 0, i32 0, i32 0)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check that instruction write prefetches are ignored.
|
||
|
|
define dso_local void @f2(i8 *%ptr) {
|
||
|
|
; CHECK-LABEL: f2:
|
||
|
|
; CHECK-NOT: %r2
|
||
|
|
; CHECK: br %r14
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 1, i32 0, i32 0)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check data read prefetches.
|
||
|
|
define dso_local void @f3(i8 *%ptr) {
|
||
|
|
; CHECK-LABEL: f3:
|
||
|
|
; CHECK: pfd 1, 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 0, i32 0, i32 1)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check data write prefetches.
|
||
|
|
define dso_local void @f4(i8 *%ptr) {
|
||
|
|
; CHECK-LABEL: f4:
|
||
|
|
; CHECK: pfd 2, 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 1, i32 0, i32 1)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check an address at the negative end of the range.
|
||
|
|
define dso_local void @f5(i8 *%base, i64 %index) {
|
||
|
|
; CHECK-LABEL: f5:
|
||
|
|
; CHECK: pfd 2, -524288({{%r2,%r3|%r3,%r2}})
|
||
|
|
; CHECK: br %r14
|
||
|
|
%add = add i64 %index, -524288
|
||
|
|
%ptr = getelementptr i8, i8 *%base, i64 %add
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 1, i32 0, i32 1)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check an address at the positive end of the range.
|
||
|
|
define dso_local void @f6(i8 *%base, i64 %index) {
|
||
|
|
; CHECK-LABEL: f6:
|
||
|
|
; CHECK: pfd 2, 524287({{%r2,%r3|%r3,%r2}})
|
||
|
|
; CHECK: br %r14
|
||
|
|
%add = add i64 %index, 524287
|
||
|
|
%ptr = getelementptr i8, i8 *%base, i64 %add
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 1, i32 0, i32 1)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check that the next address up still compiles.
|
||
|
|
define dso_local void @f7(i8 *%base, i64 %index) {
|
||
|
|
; CHECK-LABEL: f7:
|
||
|
|
; CHECK: 524288
|
||
|
|
; CHECK: pfd 2,
|
||
|
|
; CHECK: br %r14
|
||
|
|
%add = add i64 %index, 524288
|
||
|
|
%ptr = getelementptr i8, i8 *%base, i64 %add
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 1, i32 0, i32 1)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check pc-relative prefetches.
|
||
|
|
define dso_local void @f8() {
|
||
|
|
; CHECK-LABEL: f8:
|
||
|
|
; CHECK: pfdrl 2, g
|
||
|
|
; CHECK: br %r14
|
||
|
|
%ptr = getelementptr [4096 x i8], [4096 x i8] *@g, i64 0, i64 0
|
||
|
|
call void @llvm.prefetch(i8 *%ptr, i32 1, i32 0, i32 1)
|
||
|
|
ret void
|
||
|
|
}
|