136 lines
4.2 KiB
LLVM
136 lines
4.2 KiB
LLVM
; RUN: llc -mtriple=thumbv8 -arm-disable-cgp=false %s -o - | FileCheck %s
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; RUN: llc -mtriple=armv8 -arm-disable-cgp=false %s -o - | FileCheck %s
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; CHECK-LABEL: phi_pointers
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; CHECK-NOT: uxt
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define void @phi_pointers(i16* %a, i16* %b, i8 zeroext %M, i8 zeroext %N) {
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entry:
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%add = add nuw i8 %M, 1
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%and = and i8 %add, 1
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%cmp = icmp ugt i8 %add, %N
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%base = select i1 %cmp, i16* %a, i16* %b
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%other = select i1 %cmp, i16* %b, i16* %b
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br label %loop
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loop:
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%ptr = phi i16* [ %base, %entry ], [ %gep, %loop ]
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%idx = phi i8 [ %and, %entry ], [ %inc, %loop ]
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%load = load i16, i16* %ptr, align 2
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%inc = add nuw nsw i8 %idx, 1
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%gep = getelementptr inbounds i16, i16* %ptr, i8 %inc
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%cond = icmp eq i16* %gep, %other
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br i1 %cond, label %exit, label %loop
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exit:
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ret void
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}
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; CHECK-LABEL: phi_pointers_null
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; CHECK-NOT: uxt
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define void @phi_pointers_null(i16* %a, i16* %b, i8 zeroext %M, i8 zeroext %N) {
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entry:
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%add = add nuw i8 %M, 1
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%and = and i8 %add, 1
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%cmp = icmp ugt i8 %add, %N
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%base = select i1 %cmp, i16* %a, i16* %b
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%other = select i1 %cmp, i16* %b, i16* %b
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%cmp.1 = icmp eq i16* %base, %other
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br i1 %cmp.1, label %fail, label %loop
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fail:
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br label %loop
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loop:
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%ptr = phi i16* [ %base, %entry ], [ null, %fail ], [ %gep, %if.then ]
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%idx = phi i8 [ %and, %entry ], [ 0, %fail ], [ %inc, %if.then ]
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%undef = icmp eq i16* %ptr, undef
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br i1 %undef, label %exit, label %if.then
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if.then:
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%load = load i16, i16* %ptr, align 2
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%inc = add nuw nsw i8 %idx, 1
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%gep = getelementptr inbounds i16, i16* %ptr, i8 %inc
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%cond = icmp eq i16* %gep, %other
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br i1 %cond, label %exit, label %loop
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exit:
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ret void
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}
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declare i8 @do_something_with_ptr(i8, i16*)
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; CHECK-LABEL: call_pointer
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; CHECK-NOT: uxt
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define i8 @call_pointer(i8 zeroext %x, i8 zeroext %y, i16* %a, i16* %b) {
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%or = or i8 %x, %y
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%shr = lshr i8 %or, 1
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%add = add nuw i8 %shr, 2
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%cmp = icmp ne i8 %add, 0
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%ptr = select i1 %cmp, i16* %a, i16* %b
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%call = tail call zeroext i8 @do_something_with_ptr(i8 %shr, i16* %ptr)
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ret i8 %call
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}
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; CHECK-LABEL: pointer_to_pointer
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; CHECK-NOT: uxt
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define i16 @pointer_to_pointer(i16** %arg, i16 zeroext %limit) {
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entry:
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%addr = load i16*, i16** %arg
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%val = load i16, i16* %addr
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%add = add nuw i16 %val, 7
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%cmp = icmp ult i16 %add, 256
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%res = select i1 %cmp, i16 128, i16 255
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ret i16 %res
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}
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; CHECK-LABEL: gep_2d_array
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; CHECK-NOT: uxt
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define i8 @gep_2d_array(i8** %a, i8 zeroext %arg) {
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entry:
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%arrayidx.us = getelementptr inbounds i8*, i8** %a, i32 0
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%0 = load i8*, i8** %arrayidx.us, align 4
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%1 = load i8, i8* %0, align 1
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%sub = sub nuw i8 %1, 1
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%cmp = icmp ult i8 %sub, %arg
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%res = select i1 %cmp, i8 27, i8 54
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ret i8 %res
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}
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; CHECK-LABEL: gep_2d_array_loop
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; CHECK-NOT: uxt
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define void @gep_2d_array_loop(i16** nocapture readonly %a, i16** nocapture readonly %b, i32 %N) {
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entry:
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%cmp30 = icmp eq i32 %N, 0
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br i1 %cmp30, label %for.cond.cleanup, label %for.cond1.preheader.us
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for.cond1.preheader.us:
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%y.031.us = phi i32 [ %inc13.us, %for.cond1.for.cond.cleanup3_crit_edge.us ], [ 0, %entry ]
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br label %for.body4.us
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for.body4.us:
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%x.029.us = phi i32 [ 0, %for.cond1.preheader.us ], [ %inc.us, %for.body4.us ]
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%arrayidx.us = getelementptr inbounds i16*, i16** %a, i32 %x.029.us
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%0 = load i16*, i16** %arrayidx.us, align 4
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%arrayidx5.us = getelementptr inbounds i16, i16* %0, i32 %y.031.us
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%1 = load i16, i16* %arrayidx5.us, align 2
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%dec.us = add nuw i16 %1, -1
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%cmp6.us = icmp ult i16 %dec.us, 16383
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%shl.us = shl nuw i16 %dec.us, 2
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%spec.select.us = select i1 %cmp6.us, i16 %shl.us, i16 %dec.us
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%arrayidx10.us = getelementptr inbounds i16*, i16** %b, i32 %x.029.us
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%2 = load i16*, i16** %arrayidx10.us, align 4
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%arrayidx11.us = getelementptr inbounds i16, i16* %2, i32 %y.031.us
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store i16 %spec.select.us, i16* %arrayidx11.us, align 2
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%inc.us = add nuw i32 %x.029.us, 1
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%exitcond = icmp eq i32 %inc.us, %N
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br i1 %exitcond, label %for.cond1.for.cond.cleanup3_crit_edge.us, label %for.body4.us
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for.cond1.for.cond.cleanup3_crit_edge.us:
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%inc13.us = add nuw i32 %y.031.us, 1
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%exitcond32 = icmp eq i32 %inc13.us, %N
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br i1 %exitcond32, label %for.cond.cleanup, label %for.cond1.preheader.us
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for.cond.cleanup:
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ret void
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}
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