forked from OSchip/llvm-project
132 lines
3.6 KiB
LLVM
132 lines
3.6 KiB
LLVM
; Test 32-bit compare and swap.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
; Check the low end of the CS range.
|
|
define i32 @f1(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f1:
|
|
; CHECK: cs %r2, %r3, 0(%r4)
|
|
; CHECK: br %r14
|
|
%val = cmpxchg i32 *%src, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check the high end of the aligned CS range.
|
|
define i32 @f2(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f2:
|
|
; CHECK: cs %r2, %r3, 4092(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32 *%src, i64 1023
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check the next word up, which should use CSY instead of CS.
|
|
define i32 @f3(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f3:
|
|
; CHECK: csy %r2, %r3, 4096(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32 *%src, i64 1024
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check the high end of the aligned CSY range.
|
|
define i32 @f4(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f4:
|
|
; CHECK: csy %r2, %r3, 524284(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32 *%src, i64 131071
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check the next word up, which needs separate address logic.
|
|
; Other sequences besides this one would be OK.
|
|
define i32 @f5(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f5:
|
|
; CHECK: agfi %r4, 524288
|
|
; CHECK: cs %r2, %r3, 0(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32 *%src, i64 131072
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check the high end of the negative aligned CSY range.
|
|
define i32 @f6(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f6:
|
|
; CHECK: csy %r2, %r3, -4(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32 *%src, i64 -1
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check the low end of the CSY range.
|
|
define i32 @f7(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f7:
|
|
; CHECK: csy %r2, %r3, -524288(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32 *%src, i64 -131072
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check the next word down, which needs separate address logic.
|
|
; Other sequences besides this one would be OK.
|
|
define i32 @f8(i32 %cmp, i32 %swap, i32 *%src) {
|
|
; CHECK: f8:
|
|
; CHECK: agfi %r4, -524292
|
|
; CHECK: cs %r2, %r3, 0(%r4)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32 *%src, i64 -131073
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check that CS does not allow an index.
|
|
define i32 @f9(i32 %cmp, i32 %swap, i64 %src, i64 %index) {
|
|
; CHECK: f9:
|
|
; CHECK: agr %r4, %r5
|
|
; CHECK: cs %r2, %r3, 0(%r4)
|
|
; CHECK: br %r14
|
|
%add1 = add i64 %src, %index
|
|
%ptr = inttoptr i64 %add1 to i32 *
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check that CSY does not allow an index.
|
|
define i32 @f10(i32 %cmp, i32 %swap, i64 %src, i64 %index) {
|
|
; CHECK: f10:
|
|
; CHECK: agr %r4, %r5
|
|
; CHECK: csy %r2, %r3, 4096(%r4)
|
|
; CHECK: br %r14
|
|
%add1 = add i64 %src, %index
|
|
%add2 = add i64 %add1, 4096
|
|
%ptr = inttoptr i64 %add2 to i32 *
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check that a constant %cmp value is loaded into a register first.
|
|
define i32 @f11(i32 %dummy, i32 %swap, i32 *%ptr) {
|
|
; CHECK: f11:
|
|
; CHECK: lhi %r2, 1001
|
|
; CHECK: cs %r2, %r3, 0(%r4)
|
|
; CHECK: br %r14
|
|
%val = cmpxchg i32 *%ptr, i32 1001, i32 %swap seq_cst
|
|
ret i32 %val
|
|
}
|
|
|
|
; Check that a constant %swap value is loaded into a register first.
|
|
define i32 @f12(i32 %cmp, i32 *%ptr) {
|
|
; CHECK: f12:
|
|
; CHECK: lhi [[SWAP:%r[0-9]+]], 1002
|
|
; CHECK: cs %r2, [[SWAP]], 0(%r3)
|
|
; CHECK: br %r14
|
|
%val = cmpxchg i32 *%ptr, i32 %cmp, i32 1002 seq_cst
|
|
ret i32 %val
|
|
}
|