aboutsummaryrefslogtreecommitdiff
path: root/test/CodeGen/SystemZ/frame-16.ll
diff options
context:
space:
mode:
Diffstat (limited to 'test/CodeGen/SystemZ/frame-16.ll')
-rw-r--r--test/CodeGen/SystemZ/frame-16.ll331
1 files changed, 0 insertions, 331 deletions
diff --git a/test/CodeGen/SystemZ/frame-16.ll b/test/CodeGen/SystemZ/frame-16.ll
deleted file mode 100644
index 75da04447b3a..000000000000
--- a/test/CodeGen/SystemZ/frame-16.ll
+++ /dev/null
@@ -1,331 +0,0 @@
-; Test the handling of base + index + displacement addresses for large frames,
-; in cases where both 12-bit and 20-bit displacements are allowed.
-; The tests here assume z10 register pressure, without the high words
-; being available.
-;
-; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | \
-; RUN: FileCheck -check-prefix=CHECK-NOFP %s
-; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 -disable-fp-elim | \
-; RUN: FileCheck -check-prefix=CHECK-FP %s
-
-; This file tests what happens when a displacement is converted from
-; being relative to the start of a frame object to being relative to
-; the frame itself. In some cases the test is only possible if two
-; objects are allocated.
-;
-; Rather than rely on a particular order for those objects, the tests
-; instead allocate two objects of the same size and apply the test to
-; both of them. For consistency, all tests follow this model, even if
-; one object would actually be enough.
-
-; First check the highest offset that is in range of the 12-bit form.
-;
-; The last in-range doubleword offset is 4088. Since the frame has two
-; emergency spill slots at 160(%r15), the amount that we need to allocate
-; in order to put another object at offset 4088 is 4088 - 176 = 3912 bytes.
-define void @f1(i8 %byte) {
-; CHECK-NOFP-LABEL: f1:
-; CHECK-NOFP: stc %r2, 4095(%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f1:
-; CHECK-FP: stc %r2, 4095(%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [3912 x i8], align 8
- %region2 = alloca [3912 x i8], align 8
- %ptr1 = getelementptr inbounds [3912 x i8], [3912 x i8]* %region1, i64 0, i64 7
- %ptr2 = getelementptr inbounds [3912 x i8], [3912 x i8]* %region2, i64 0, i64 7
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Test the first offset that is out-of-range of the 12-bit form.
-define void @f2(i8 %byte) {
-; CHECK-NOFP-LABEL: f2:
-; CHECK-NOFP: stcy %r2, 4096(%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f2:
-; CHECK-FP: stcy %r2, 4096(%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [3912 x i8], align 8
- %region2 = alloca [3912 x i8], align 8
- %ptr1 = getelementptr inbounds [3912 x i8], [3912 x i8]* %region1, i64 0, i64 8
- %ptr2 = getelementptr inbounds [3912 x i8], [3912 x i8]* %region2, i64 0, i64 8
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Test the last offset that is in range of the 20-bit form.
-;
-; The last in-range doubleword offset is 524280, so by the same reasoning
-; as above, we need to allocate objects of 524280 - 176 = 524104 bytes.
-define void @f3(i8 %byte) {
-; CHECK-NOFP-LABEL: f3:
-; CHECK-NOFP: stcy %r2, 524287(%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f3:
-; CHECK-FP: stcy %r2, 524287(%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [524104 x i8], align 8
- %region2 = alloca [524104 x i8], align 8
- %ptr1 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region1, i64 0, i64 7
- %ptr2 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region2, i64 0, i64 7
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Test the first out-of-range offset. We can't use an index register here,
-; and the offset is also out of LAY's range, so expect a constant load
-; followed by an addition.
-define void @f4(i8 %byte) {
-; CHECK-NOFP-LABEL: f4:
-; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: stc %r2, 0(%r1,%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f4:
-; CHECK-FP: llilh %r1, 8
-; CHECK-FP: stc %r2, 0(%r1,%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [524104 x i8], align 8
- %region2 = alloca [524104 x i8], align 8
- %ptr1 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region1, i64 0, i64 8
- %ptr2 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region2, i64 0, i64 8
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Add 4095 to the previous offset, to test the other end of the STC range.
-; The instruction will actually be STCY before frame lowering.
-define void @f5(i8 %byte) {
-; CHECK-NOFP-LABEL: f5:
-; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: stc %r2, 4095(%r1,%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f5:
-; CHECK-FP: llilh %r1, 8
-; CHECK-FP: stc %r2, 4095(%r1,%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [524104 x i8], align 8
- %region2 = alloca [524104 x i8], align 8
- %ptr1 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region1, i64 0, i64 4103
- %ptr2 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region2, i64 0, i64 4103
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Test the next offset after that, which uses STCY instead of STC.
-define void @f6(i8 %byte) {
-; CHECK-NOFP-LABEL: f6:
-; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: stcy %r2, 4096(%r1,%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f6:
-; CHECK-FP: llilh %r1, 8
-; CHECK-FP: stcy %r2, 4096(%r1,%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [524104 x i8], align 8
- %region2 = alloca [524104 x i8], align 8
- %ptr1 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region1, i64 0, i64 4104
- %ptr2 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region2, i64 0, i64 4104
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Now try an offset of 524287 from the start of the object, with the
-; object being at offset 1048576 (1 << 20). The backend prefers to create
-; anchors 0x10000 bytes apart, so that the high part can be loaded using
-; LLILH while still using STC in more cases than 0x40000 anchors would.
-define void @f7(i8 %byte) {
-; CHECK-NOFP-LABEL: f7:
-; CHECK-NOFP: llilh %r1, 23
-; CHECK-NOFP: stcy %r2, 65535(%r1,%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f7:
-; CHECK-FP: llilh %r1, 23
-; CHECK-FP: stcy %r2, 65535(%r1,%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [1048400 x i8], align 8
- %region2 = alloca [1048400 x i8], align 8
- %ptr1 = getelementptr inbounds [1048400 x i8], [1048400 x i8]* %region1, i64 0, i64 524287
- %ptr2 = getelementptr inbounds [1048400 x i8], [1048400 x i8]* %region2, i64 0, i64 524287
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Keep the object-relative offset the same but bump the size of the
-; objects by one doubleword.
-define void @f8(i8 %byte) {
-; CHECK-NOFP-LABEL: f8:
-; CHECK-NOFP: llilh %r1, 24
-; CHECK-NOFP: stc %r2, 7(%r1,%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f8:
-; CHECK-FP: llilh %r1, 24
-; CHECK-FP: stc %r2, 7(%r1,%r11)
-; CHECK-FP: br %r14
- %region1 = alloca [1048408 x i8], align 8
- %region2 = alloca [1048408 x i8], align 8
- %ptr1 = getelementptr inbounds [1048408 x i8], [1048408 x i8]* %region1, i64 0, i64 524287
- %ptr2 = getelementptr inbounds [1048408 x i8], [1048408 x i8]* %region2, i64 0, i64 524287
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Check a case where the original displacement is out of range. The backend
-; should force separate address logic from the outset. We don't yet do any
-; kind of anchor optimization, so there should be no offset on the STC itself.
-;
-; Before frame lowering this is an LA followed by the AGFI seen below.
-; The LA then gets lowered into the LLILH/LA form. The exact sequence
-; isn't that important though.
-define void @f9(i8 %byte) {
-; CHECK-NOFP-LABEL: f9:
-; CHECK-NOFP: llilh [[R1:%r[1-5]]], 16
-; CHECK-NOFP: la [[R2:%r[1-5]]], 8([[R1]],%r15)
-; CHECK-NOFP: agfi [[R2]], 524288
-; CHECK-NOFP: stc %r2, 0([[R2]])
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f9:
-; CHECK-FP: llilh [[R1:%r[1-5]]], 16
-; CHECK-FP: la [[R2:%r[1-5]]], 8([[R1]],%r11)
-; CHECK-FP: agfi [[R2]], 524288
-; CHECK-FP: stc %r2, 0([[R2]])
-; CHECK-FP: br %r14
- %region1 = alloca [1048408 x i8], align 8
- %region2 = alloca [1048408 x i8], align 8
- %ptr1 = getelementptr inbounds [1048408 x i8], [1048408 x i8]* %region1, i64 0, i64 524288
- %ptr2 = getelementptr inbounds [1048408 x i8], [1048408 x i8]* %region2, i64 0, i64 524288
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
-
-; Repeat f4 in a case that needs the emergency spill slots (because all
-; call-clobbered registers are live and no call-saved ones have been
-; allocated).
-define void @f10(i32 *%vptr, i8 %byte) {
-; CHECK-NOFP-LABEL: f10:
-; CHECK-NOFP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r15)
-; CHECK-NOFP: llilh [[REGISTER]], 8
-; CHECK-NOFP: stc %r3, 0([[REGISTER]],%r15)
-; CHECK-NOFP: lg [[REGISTER]], [[OFFSET]](%r15)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f10:
-; CHECK-FP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r11)
-; CHECK-FP: llilh [[REGISTER]], 8
-; CHECK-FP: stc %r3, 0([[REGISTER]],%r11)
-; CHECK-FP: lg [[REGISTER]], [[OFFSET]](%r11)
-; CHECK-FP: br %r14
- %i0 = load volatile i32 , i32 *%vptr
- %i1 = load volatile i32 , i32 *%vptr
- %i4 = load volatile i32 , i32 *%vptr
- %i5 = load volatile i32 , i32 *%vptr
- %region1 = alloca [524104 x i8], align 8
- %region2 = alloca [524104 x i8], align 8
- %ptr1 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region1, i64 0, i64 8
- %ptr2 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region2, i64 0, i64 8
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- store volatile i32 %i0, i32 *%vptr
- store volatile i32 %i1, i32 *%vptr
- store volatile i32 %i4, i32 *%vptr
- store volatile i32 %i5, i32 *%vptr
- ret void
-}
-
-; And again with maximum register pressure. The only spill slots that the
-; NOFP case needs are the emergency ones, so the offsets are the same as for f4.
-; However, the FP case uses %r11 as the frame pointer and must therefore
-; spill a second register. This leads to an extra displacement of 8.
-define void @f11(i32 *%vptr, i8 %byte) {
-; CHECK-NOFP-LABEL: f11:
-; CHECK-NOFP: stmg %r6, %r15,
-; CHECK-NOFP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r15)
-; CHECK-NOFP: llilh [[REGISTER]], 8
-; CHECK-NOFP: stc %r3, 0([[REGISTER]],%r15)
-; CHECK-NOFP: lg [[REGISTER]], [[OFFSET]](%r15)
-; CHECK-NOFP: lmg %r6, %r15,
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f11:
-; CHECK-FP: stmg %r6, %r15,
-; CHECK-FP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r11)
-; CHECK-FP: llilh [[REGISTER]], 8
-; CHECK-FP: stc %r3, 8([[REGISTER]],%r11)
-; CHECK-FP: lg [[REGISTER]], [[OFFSET]](%r11)
-; CHECK-FP: lmg %r6, %r15,
-; CHECK-FP: br %r14
- %i0 = load volatile i32 , i32 *%vptr
- %i1 = load volatile i32 , i32 *%vptr
- %i4 = load volatile i32 , i32 *%vptr
- %i5 = load volatile i32 , i32 *%vptr
- %i6 = load volatile i32 , i32 *%vptr
- %i7 = load volatile i32 , i32 *%vptr
- %i8 = load volatile i32 , i32 *%vptr
- %i9 = load volatile i32 , i32 *%vptr
- %i10 = load volatile i32 , i32 *%vptr
- %i11 = load volatile i32 , i32 *%vptr
- %i12 = load volatile i32 , i32 *%vptr
- %i13 = load volatile i32 , i32 *%vptr
- %i14 = load volatile i32 , i32 *%vptr
- %region1 = alloca [524104 x i8], align 8
- %region2 = alloca [524104 x i8], align 8
- %ptr1 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region1, i64 0, i64 8
- %ptr2 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region2, i64 0, i64 8
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- store volatile i32 %i0, i32 *%vptr
- store volatile i32 %i1, i32 *%vptr
- store volatile i32 %i4, i32 *%vptr
- store volatile i32 %i5, i32 *%vptr
- store volatile i32 %i6, i32 *%vptr
- store volatile i32 %i7, i32 *%vptr
- store volatile i32 %i8, i32 *%vptr
- store volatile i32 %i9, i32 *%vptr
- store volatile i32 %i10, i32 *%vptr
- store volatile i32 %i11, i32 *%vptr
- store volatile i32 %i12, i32 *%vptr
- store volatile i32 %i13, i32 *%vptr
- store volatile i32 %i14, i32 *%vptr
- ret void
-}
-
-; Repeat f4 in a case where the index register is already occupied.
-define void @f12(i8 %byte, i64 %index) {
-; CHECK-NOFP-LABEL: f12:
-; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: agr %r1, %r15
-; CHECK-NOFP: stc %r2, 0(%r3,%r1)
-; CHECK-NOFP: br %r14
-;
-; CHECK-FP-LABEL: f12:
-; CHECK-FP: llilh %r1, 8
-; CHECK-FP: agr %r1, %r11
-; CHECK-FP: stc %r2, 0(%r3,%r1)
-; CHECK-FP: br %r14
- %region1 = alloca [524104 x i8], align 8
- %region2 = alloca [524104 x i8], align 8
- %index1 = add i64 %index, 8
- %ptr1 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region1, i64 0, i64 %index1
- %ptr2 = getelementptr inbounds [524104 x i8], [524104 x i8]* %region2, i64 0, i64 %index1
- store volatile i8 %byte, i8 *%ptr1
- store volatile i8 %byte, i8 *%ptr2
- ret void
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-17 05:26:55 +0000