89 lines
2.3 KiB
LLVM
89 lines
2.3 KiB
LLVM
|
; Test 64-bit byteswaps from registers to memory.
|
||
|
|
;
|
||
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
||
|
|
|
||
|
|
declare i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
|
||
|
|
; Check STRVG with no displacement.
|
||
|
|
define void @f1(i64 *%dst, i64 %a) {
|
||
|
|
; CHECK-LABEL: f1:
|
||
|
|
; CHECK: strvg %r3, 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%swapped = call i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
store i64 %swapped, i64 *%dst
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check the high end of the aligned STRVG range.
|
||
|
|
define void @f2(i64 *%dst, i64 %a) {
|
||
|
|
; CHECK-LABEL: f2:
|
||
|
|
; CHECK: strvg %r3, 524280(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%ptr = getelementptr i64, i64 *%dst, i64 65535
|
||
|
|
%swapped = call i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
store i64 %swapped, i64 *%ptr
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check the next doubleword up, which needs separate address logic.
|
||
|
|
; Other sequences besides this one would be OK.
|
||
|
|
define void @f3(i64 *%dst, i64 %a) {
|
||
|
|
; CHECK-LABEL: f3:
|
||
|
|
; CHECK: agfi %r2, 524288
|
||
|
|
; CHECK: strvg %r3, 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%ptr = getelementptr i64, i64 *%dst, i64 65536
|
||
|
|
%swapped = call i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
store i64 %swapped, i64 *%ptr
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check the high end of the negative aligned STRVG range.
|
||
|
|
define void @f4(i64 *%dst, i64 %a) {
|
||
|
|
; CHECK-LABEL: f4:
|
||
|
|
; CHECK: strvg %r3, -8(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%ptr = getelementptr i64, i64 *%dst, i64 -1
|
||
|
|
%swapped = call i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
store i64 %swapped, i64 *%ptr
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check the low end of the STRVG range.
|
||
|
|
define void @f5(i64 *%dst, i64 %a) {
|
||
|
|
; CHECK-LABEL: f5:
|
||
|
|
; CHECK: strvg %r3, -524288(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%ptr = getelementptr i64, i64 *%dst, i64 -65536
|
||
|
|
%swapped = call i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
store i64 %swapped, i64 *%ptr
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check the next doubleword down, which needs separate address logic.
|
||
|
|
; Other sequences besides this one would be OK.
|
||
|
|
define void @f6(i64 *%dst, i64 %a) {
|
||
|
|
; CHECK-LABEL: f6:
|
||
|
|
; CHECK: agfi %r2, -524296
|
||
|
|
; CHECK: strvg %r3, 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%ptr = getelementptr i64, i64 *%dst, i64 -65537
|
||
|
|
%swapped = call i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
store i64 %swapped, i64 *%ptr
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check that STRVG allows an index.
|
||
|
|
define void @f7(i64 %src, i64 %index, i64 %a) {
|
||
|
|
; CHECK-LABEL: f7:
|
||
|
|
; CHECK: strvg %r4, 524287({{%r3,%r2|%r2,%r3}})
|
||
|
|
; CHECK: br %r14
|
||
|
|
%add1 = add i64 %src, %index
|
||
|
|
%add2 = add i64 %add1, 524287
|
||
|
|
%ptr = inttoptr i64 %add2 to i64 *
|
||
|
|
%swapped = call i64 @llvm.bswap.i64(i64 %a)
|
||
|
|
store i64 %swapped, i64 *%ptr
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|