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