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; RUN: llc < %s -mtriple=avr -mattr=movw,lpm | FileCheck %s
; XFAIL: *
; Tests the standard LPM instruction
define i8 @test8(ptr addrspace(1) %p) {
; CHECK-LABEL: test8:
; CHECK: movw r30, r24
; CHECK: lpm r24, Z
%1 = load i8, ptr addrspace(1) %p
ret i8 %1
}
define i16 @test16(ptr addrspace(1) %p) {
; CHECK-LABEL: test16:
; CHECK: movw r30, r24
; CHECK: lpm r24, Z+
; CHECK: lpm r25, Z+
%1 = load i16, ptr addrspace(1) %p
ret i16 %1
}
define i8 @test8postinc(ptr addrspace(1) %x, i8 %y) {
; CHECK-LABEL: test8postinc:
; CHECK: movw r30, r24
; CHECK: lpm {{.*}}, Z+
entry:
%cmp10 = icmp sgt i8 %y, 0
br i1 %cmp10, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%ret.013 = phi i8 [ %add, %for.body ], [ 0, %entry ]
%i.012 = phi i8 [ %inc, %for.body ], [ 0, %entry ]
%x.addr.011 = phi ptr addrspace(1) [ %incdec.ptr, %for.body ], [ %x, %entry ]
%incdec.ptr = getelementptr inbounds i8, ptr addrspace(1) %x.addr.011, i16 1
%0 = load i8, ptr addrspace(1) %x.addr.011
%add = add i8 %0, %ret.013
%inc = add i8 %i.012, 1
%exitcond = icmp eq i8 %inc, %y
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
%ret.0.lcssa = phi i8 [ 0, %entry ], [ %add, %for.body ]
ret i8 %ret.0.lcssa
}
define i16 @test16postinc(ptr addrspace(1) %x, i8 %y) {
; CHECK-LABEL: test16postinc:
; CHECK: movw r30, r24
; CHECK: lpm {{.*}}, Z+
; CHECK: lpm {{.*}}, Z+
entry:
%cmp5 = icmp sgt i8 %y, 0
br i1 %cmp5, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%ret.08 = phi i16 [ %add, %for.body ], [ 0, %entry ]
%i.07 = phi i8 [ %inc, %for.body ], [ 0, %entry ]
%x.addr.06 = phi ptr addrspace(1) [ %incdec.ptr, %for.body ], [ %x, %entry ]
%incdec.ptr = getelementptr inbounds i16, ptr addrspace(1) %x.addr.06, i16 1
%0 = load i16, ptr addrspace(1) %x.addr.06
%add = add nsw i16 %0, %ret.08
%inc = add i8 %i.07, 1
%exitcond = icmp eq i8 %inc, %y
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
%ret.0.lcssa = phi i16 [ 0, %entry ], [ %add, %for.body ]
ret i16 %ret.0.lcssa
}
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