derek.holloway
7502bf64a4
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122 lines
2.5 KiB
LLVM
122 lines
2.5 KiB
LLVM
; Test sequences that can use ROSBG.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Test the simple case.
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define i32 @f1(i32 %a, i32 %b) {
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; CHECK-LABEL: f1:
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; CHECK: rosbg %r2, %r3, 59, 59, 0
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; CHECK: br %r14
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%andb = and i32 %b, 16
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%or = or i32 %a, %andb
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ret i32 %or
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}
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; ...and again with i64.
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define i64 @f2(i64 %a, i64 %b) {
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; CHECK-LABEL: f2:
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; CHECK: rosbg %r2, %r3, 59, 59, 0
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; CHECK: br %r14
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%andb = and i64 %b, 16
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%or = or i64 %a, %andb
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ret i64 %or
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}
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; Test a case where wraparound is needed.
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define i32 @f3(i32 %a, i32 %b) {
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; CHECK-LABEL: f3:
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; CHECK: rosbg %r2, %r3, 63, 60, 0
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; CHECK: br %r14
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%andb = and i32 %b, -7
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%or = or i32 %a, %andb
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ret i32 %or
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}
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; ...and again with i64.
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define i64 @f4(i64 %a, i64 %b) {
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; CHECK-LABEL: f4:
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; CHECK: rosbg %r2, %r3, 63, 60, 0
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; CHECK: br %r14
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%andb = and i64 %b, -7
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%or = or i64 %a, %andb
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ret i64 %or
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}
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; Test a case with just a shift.
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define i32 @f6(i32 %a, i32 %b) {
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; CHECK-LABEL: f6:
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; CHECK: rosbg %r2, %r3, 32, 51, 12
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; CHECK: br %r14
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%shrb = shl i32 %b, 12
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%or = or i32 %a, %shrb
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ret i32 %or
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}
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; ...and again with i64.
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define i64 @f7(i64 %a, i64 %b) {
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; CHECK-LABEL: f7:
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; CHECK: rosbg %r2, %r3, 0, 51, 12
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; CHECK: br %r14
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%shrb = shl i64 %b, 12
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%or = or i64 %a, %shrb
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ret i64 %or
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}
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; Test a case with just a rotate. This can't use ROSBG.
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define i32 @f8(i32 %a, i32 %b) {
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; CHECK-LABEL: f8:
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; CHECK: rll {{%r[0-5]}}
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; CHECK: or {{%r[0-5]}}
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; CHECK: br %r14
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%shlb = shl i32 %b, 30
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%shrb = lshr i32 %b, 2
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%rotlb = or i32 %shlb, %shrb
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%or = or i32 %a, %rotlb
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ret i32 %or
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}
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; ...and again with i64, which can.
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define i64 @f9(i64 %a, i64 %b) {
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; CHECK-LABEL: f9:
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; CHECK: rosbg %r2, %r3, 0, 63, 47
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; CHECK: br %r14
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%shlb = shl i64 %b, 47
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%shrb = lshr i64 %b, 17
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%rotlb = or i64 %shlb, %shrb
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%or = or i64 %a, %rotlb
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ret i64 %or
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}
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; Test a case with a shift and AND.
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define i32 @f10(i32 %a, i32 %b) {
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; CHECK-LABEL: f10:
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; CHECK: rosbg %r2, %r3, 56, 59, 4
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; CHECK: br %r14
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%shrb = shl i32 %b, 4
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%andb = and i32 %shrb, 240
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%or = or i32 %a, %andb
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ret i32 %or
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}
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; ...and again with i64.
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define i64 @f11(i64 %a, i64 %b) {
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; CHECK-LABEL: f11:
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; CHECK: rosbg %r2, %r3, 56, 59, 4
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; CHECK: br %r14
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%shrb = shl i64 %b, 4
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%andb = and i64 %shrb, 240
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%or = or i64 %a, %andb
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ret i64 %or
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}
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; Check the handling of zext and OR, which can use ROSBG.
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define i64 @f12(i64 %a, i32 %b) {
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; CHECK-LABEL: f12:
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; CHECK: rosbg %r2, %r3, 32, 63, 0
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; CHECK: br %r14
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%add = add i32 %b, 1
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%ext = zext i32 %add to i64
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%or = or i64 %a, %ext
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ret i64 %or
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}
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