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; RUN: llc < %s -mtriple=arm-eabi -mcpu=generic | FileCheck %s
define i32 @sadd(i32 %a, i32 %b) local_unnamed_addr #0 {
; CHECK-LABEL: sadd:
; CHECK: adds r0, r0, r1
; CHECK-NEXT: movvc pc, lr
entry:
%0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %a, i32 %b)
%1 = extractvalue { i32, i1 } %0, 1
br i1 %1, label %trap, label %cont
trap:
tail call void @llvm.trap() #2
unreachable
cont:
%2 = extractvalue { i32, i1 } %0, 0
ret i32 %2
}
define i32 @uadd(i32 %a, i32 %b) local_unnamed_addr #0 {
; CHECK-LABEL: uadd:
; CHECK: adds r0, r0, r1
; CHECK-NEXT: movlo pc, lr
entry:
%0 = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b)
%1 = extractvalue { i32, i1 } %0, 1
br i1 %1, label %trap, label %cont
trap:
tail call void @llvm.trap() #2
unreachable
cont:
%2 = extractvalue { i32, i1 } %0, 0
ret i32 %2
}
define i32 @ssub(i32 %a, i32 %b) local_unnamed_addr #0 {
; CHECK-LABEL: ssub:
; CHECK: subs r0, r0, r1
; CHECK-NEXT: movvc pc, lr
entry:
%0 = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %a, i32 %b)
%1 = extractvalue { i32, i1 } %0, 1
br i1 %1, label %trap, label %cont
trap:
tail call void @llvm.trap() #2
unreachable
cont:
%2 = extractvalue { i32, i1 } %0, 0
ret i32 %2
}
define i32 @usub(i32 %a, i32 %b) local_unnamed_addr #0 {
; CHECK-LABEL: usub:
; CHECK: subs r0, r0, r1
; CHECK-NEXT: movhs pc, lr
entry:
%0 = tail call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
%1 = extractvalue { i32, i1 } %0, 1
br i1 %1, label %trap, label %cont
trap:
tail call void @llvm.trap() #2
unreachable
cont:
%2 = extractvalue { i32, i1 } %0, 0
ret i32 %2
}
define void @sum(i32* %a, i32* %b, i32 %n) local_unnamed_addr #0 {
; CHECK-LABEL: sum:
; CHECK: ldr [[R0:r[0-9]+]],
; CHECK-NEXT: ldr [[R1:r[0-9]+|lr]],
; CHECK-NEXT: adds [[R2:r[0-9]+]], [[R1]], [[R0]]
; CHECK-NEXT: strvc [[R2]],
; CHECK-NEXT: addsvc
; CHECK-NEXT: bvs
entry:
%cmp7 = icmp eq i32 %n, 0
br i1 %cmp7, label %for.cond.cleanup, label %for.body
for.cond.cleanup:
ret void
for.body:
%i.08 = phi i32 [ %7, %cont2 ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, i32* %b, i32 %i.08
%0 = load i32, i32* %arrayidx, align 4
%arrayidx1 = getelementptr inbounds i32, i32* %a, i32 %i.08
%1 = load i32, i32* %arrayidx1, align 4
%2 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %1, i32 %0)
%3 = extractvalue { i32, i1 } %2, 1
br i1 %3, label %trap, label %cont
trap:
tail call void @llvm.trap() #2
unreachable
cont:
%4 = extractvalue { i32, i1 } %2, 0
store i32 %4, i32* %arrayidx1, align 4
%5 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.08, i32 1)
%6 = extractvalue { i32, i1 } %5, 1
br i1 %6, label %trap, label %cont2
cont2:
%7 = extractvalue { i32, i1 } %5, 0
%cmp = icmp eq i32 %7, %n
br i1 %cmp, label %for.cond.cleanup, label %for.body
}
define void @extern_loop(i32 %n) local_unnamed_addr #0 {
; Do not replace the compare around the clobbering call.
; CHECK: add {{r[0-9]+}}, {{r[0-9]+}}, #1
; CHECK-NEXT: bl external_fn
; CHECK: cmp
entry:
%0 = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %n, i32 1)
%1 = extractvalue { i32, i1 } %0, 1
br i1 %1, label %trap, label %cont.lr.ph
cont.lr.ph:
%2 = extractvalue { i32, i1 } %0, 0
%cmp5 = icmp sgt i32 %2, 0
br i1 %cmp5, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader:
br label %for.body
trap:
tail call void @llvm.trap() #2
unreachable
for.cond.cleanup:
ret void
for.body:
%i.046 = phi i32 [ %5, %cont1 ], [ 0, %for.body.preheader ]
tail call void bitcast (void (...)* @external_fn to void ()*)() #4
%3 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.046, i32 1)
%4 = extractvalue { i32, i1 } %3, 1
br i1 %4, label %trap, label %cont1
cont1:
%5 = extractvalue { i32, i1 } %3, 0
%cmp = icmp slt i32 %5, %2
br i1 %cmp, label %for.body, label %for.cond.cleanup
}
declare void @external_fn(...) local_unnamed_addr #0
declare void @llvm.trap() #2
declare { i32, i1 } @llvm.sadd.with.overflow.i32(i32, i32) #1
declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1
declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32) #1
declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) #1
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