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; Test the use of TEST UNDER MASK for 32-bit operations.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
@g = global i32 0
; Check the lowest useful TMLL value.
define void @f1(i32 %a) {
; CHECK-LABEL: f1:
; CHECK: tmll %r2, 1
; CHECK: je {{\.L.*}}
; CHECK: br %r14
entry:
%and = and i32 %a, 1
%cmp = icmp eq i32 %and, 0
br i1 %cmp, label %exit, label %store
store:
store i32 1, i32 *@g
br label %exit
exit:
ret void
}
; Check the high end of the TMLL range.
define void @f2(i32 %a) {
; CHECK-LABEL: f2:
; CHECK: tmll %r2, 65535
; CHECK: jne {{\.L.*}}
; CHECK: br %r14
entry:
%and = and i32 %a, 65535
%cmp = icmp ne i32 %and, 0
br i1 %cmp, label %exit, label %store
store:
store i32 1, i32 *@g
br label %exit
exit:
ret void
}
; Check the lowest useful TMLH value, which is the next value up.
define void @f3(i32 %a) {
; CHECK-LABEL: f3:
; CHECK: tmlh %r2, 1
; CHECK: jne {{\.L.*}}
; CHECK: br %r14
entry:
%and = and i32 %a, 65536
%cmp = icmp ne i32 %and, 0
br i1 %cmp, label %exit, label %store
store:
store i32 1, i32 *@g
br label %exit
exit:
ret void
}
; Check the next value up again, which cannot use TM.
define void @f4(i32 %a) {
; CHECK-LABEL: f4:
; CHECK-NOT: {{tm[lh].}}
; CHECK: br %r14
entry:
%and = and i32 %a, 4294901759
%cmp = icmp eq i32 %and, 0
br i1 %cmp, label %exit, label %store
store:
store i32 1, i32 *@g
br label %exit
exit:
ret void
}
; Check the high end of the TMLH range.
define void @f5(i32 %a) {
; CHECK-LABEL: f5:
; CHECK: tmlh %r2, 65535
; CHECK: je {{\.L.*}}
; CHECK: br %r14
entry:
%and = and i32 %a, 4294901760
%cmp = icmp eq i32 %and, 0
br i1 %cmp, label %exit, label %store
store:
store i32 1, i32 *@g
br label %exit
exit:
ret void
}
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