forked from OSchip/llvm-project
96 lines
2.5 KiB
LLVM
96 lines
2.5 KiB
LLVM
; Test 32-bit addition in which the second operand is constant.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
declare i32 @foo()
|
|
|
|
; Check addition of 1.
|
|
define zeroext i1 @f1(i32 %dummy, i32 %a, i32 *%res) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: alfi %r3, 1
|
|
; CHECK-DAG: st %r3, 0(%r4)
|
|
; CHECK-DAG: ipm [[REG:%r[0-5]]]
|
|
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35
|
|
; CHECK: br %r14
|
|
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 1)
|
|
%val = extractvalue {i32, i1} %t, 0
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
store i32 %val, i32 *%res
|
|
ret i1 %obit
|
|
}
|
|
|
|
; Check the high end of the ALFI range.
|
|
define zeroext i1 @f2(i32 %dummy, i32 %a, i32 *%res) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: alfi %r3, 4294967295
|
|
; CHECK-DAG: st %r3, 0(%r4)
|
|
; CHECK-DAG: ipm [[REG:%r[0-5]]]
|
|
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35
|
|
; CHECK: br %r14
|
|
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 4294967295)
|
|
%val = extractvalue {i32, i1} %t, 0
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
store i32 %val, i32 *%res
|
|
ret i1 %obit
|
|
}
|
|
|
|
; Check that negative values are treated as unsigned
|
|
define zeroext i1 @f3(i32 %dummy, i32 %a, i32 *%res) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: alfi %r3, 4294967295
|
|
; CHECK-DAG: st %r3, 0(%r4)
|
|
; CHECK-DAG: ipm [[REG:%r[0-5]]]
|
|
; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35
|
|
; CHECK: br %r14
|
|
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 -1)
|
|
%val = extractvalue {i32, i1} %t, 0
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
store i32 %val, i32 *%res
|
|
ret i1 %obit
|
|
}
|
|
|
|
; Check using the overflow result for a branch.
|
|
define void @f4(i32 %dummy, i32 %a, i32 *%res) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: alfi %r3, 1
|
|
; CHECK: st %r3, 0(%r4)
|
|
; CHECK: jgnle foo@PLT
|
|
; CHECK: br %r14
|
|
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 1)
|
|
%val = extractvalue {i32, i1} %t, 0
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
store i32 %val, i32 *%res
|
|
br i1 %obit, label %call, label %exit
|
|
|
|
call:
|
|
tail call i32 @foo()
|
|
br label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; ... and the same with the inverted direction.
|
|
define void @f5(i32 %dummy, i32 %a, i32 *%res) {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: alfi %r3, 1
|
|
; CHECK: st %r3, 0(%r4)
|
|
; CHECK: jgle foo@PLT
|
|
; CHECK: br %r14
|
|
%t = call {i32, i1} @llvm.uadd.with.overflow.i32(i32 %a, i32 1)
|
|
%val = extractvalue {i32, i1} %t, 0
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
store i32 %val, i32 *%res
|
|
br i1 %obit, label %exit, label %call
|
|
|
|
call:
|
|
tail call i32 @foo()
|
|
br label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
declare {i32, i1} @llvm.uadd.with.overflow.i32(i32, i32) nounwind readnone
|
|
|