forked from OSchip/llvm-project
191 lines
5.0 KiB
LLVM
191 lines
5.0 KiB
LLVM
; Test STOCs that are presented as selects.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
|
|
|
|
; Run the test again to make sure it still works the same even
|
|
; in the presence of the load-store-on-condition-2 facility.
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
|
|
|
|
declare void @foo(i32 *)
|
|
|
|
; Test the simple case, with the loaded value first.
|
|
define void @f1(i32 *%ptr, i32 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stoche %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%res = select i1 %cond, i32 %orig, i32 %alt
|
|
store i32 %res, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; ...and with the loaded value second
|
|
define void @f2(i32 *%ptr, i32 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stocl %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%res = select i1 %cond, i32 %alt, i32 %orig
|
|
store i32 %res, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; Test cases where the value is explicitly sign-extended to 64 bits, with the
|
|
; loaded value first.
|
|
define void @f3(i32 *%ptr, i64 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stoche %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%ext = sext i32 %orig to i64
|
|
%res = select i1 %cond, i64 %ext, i64 %alt
|
|
%trunc = trunc i64 %res to i32
|
|
store i32 %trunc, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; ...and with the loaded value second
|
|
define void @f4(i32 *%ptr, i64 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stocl %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%ext = sext i32 %orig to i64
|
|
%res = select i1 %cond, i64 %alt, i64 %ext
|
|
%trunc = trunc i64 %res to i32
|
|
store i32 %trunc, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; Test cases where the value is explicitly zero-extended to 32 bits, with the
|
|
; loaded value first.
|
|
define void @f5(i32 *%ptr, i64 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stoche %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%ext = zext i32 %orig to i64
|
|
%res = select i1 %cond, i64 %ext, i64 %alt
|
|
%trunc = trunc i64 %res to i32
|
|
store i32 %trunc, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; ...and with the loaded value second
|
|
define void @f6(i32 *%ptr, i64 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stocl %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%ext = zext i32 %orig to i64
|
|
%res = select i1 %cond, i64 %alt, i64 %ext
|
|
%trunc = trunc i64 %res to i32
|
|
store i32 %trunc, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; Check the high end of the aligned STOC range.
|
|
define void @f7(i32 *%base, i32 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f7:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stoche %r3, 524284(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%base, i64 131071
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%res = select i1 %cond, i32 %orig, i32 %alt
|
|
store i32 %res, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; Check the next word up. Other sequences besides this one would be OK.
|
|
define void @f8(i32 *%base, i32 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f8:
|
|
; CHECK: agfi %r2, 524288
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stoche %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%base, i64 131072
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%res = select i1 %cond, i32 %orig, i32 %alt
|
|
store i32 %res, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; Check the low end of the STOC range.
|
|
define void @f9(i32 *%base, i32 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f9:
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stoche %r3, -524288(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%base, i64 -131072
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%res = select i1 %cond, i32 %orig, i32 %alt
|
|
store i32 %res, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; Check the next word down, with the same comments as f8.
|
|
define void @f10(i32 *%base, i32 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f10:
|
|
; CHECK: agfi %r2, -524292
|
|
; CHECK: clfi %r4, 42
|
|
; CHECK: stoche %r3, 0(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i32, i32 *%base, i64 -131073
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%res = select i1 %cond, i32 %orig, i32 %alt
|
|
store i32 %res, i32 *%ptr
|
|
ret void
|
|
}
|
|
|
|
; Try a frame index base.
|
|
define void @f11(i32 %alt, i32 %limit) {
|
|
; CHECK-LABEL: f11:
|
|
; CHECK: brasl %r14, foo@PLT
|
|
; CHECK: stoche {{%r[0-9]+}}, {{[0-9]+}}(%r15)
|
|
; CHECK: brasl %r14, foo@PLT
|
|
; CHECK: br %r14
|
|
%ptr = alloca i32
|
|
call void @foo(i32 *%ptr)
|
|
%cond = icmp ult i32 %limit, 42
|
|
%orig = load i32, i32 *%ptr
|
|
%res = select i1 %cond, i32 %orig, i32 %alt
|
|
store i32 %res, i32 *%ptr
|
|
call void @foo(i32 *%ptr)
|
|
ret void
|
|
}
|
|
|
|
; Test that conditionally-executed stores do not use STOC, since STOC
|
|
; is allowed to trap even when the condition is false.
|
|
define void @f12(i32 %a, i32 %b, i32 *%dest) {
|
|
; CHECK-LABEL: f12:
|
|
; CHECK-NOT: stoc
|
|
; CHECK: br %r14
|
|
entry:
|
|
%cmp = icmp ule i32 %a, %b
|
|
br i1 %cmp, label %store, label %exit
|
|
|
|
store:
|
|
store i32 %b, i32 *%dest
|
|
br label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|