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llvm-mirror/test/Transforms/PhaseOrdering/PR6627.ll
Stephen Lin cf082ae903 Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.
This update was done with the following bash script:

  find test/Transforms -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    if ! grep -q "^; *RUN: *llc" $NAME; then
      TEMP=`mktemp -t temp`
      cp $NAME $TEMP
      sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \
      while read FUNC; do
        sed -i '' "s/;\(.*\)\([A-Za-z0-9_]*\):\( *\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3@$FUNC(/g" $TEMP
      done
      mv $TEMP $NAME
    fi
  done

llvm-svn: 186268
2013-07-14 01:42:54 +00:00

94 lines
3.1 KiB
LLVM

; RUN: opt -O3 -S < %s | FileCheck %s
; XFAIL: *
declare i32 @doo(...)
; PR6627 - This whole nasty sequence should be flattened down to a single
; 32-bit comparison.
define void @test2(i8* %arrayidx) nounwind ssp {
entry:
%xx = bitcast i8* %arrayidx to i32*
%x1 = load i32* %xx, align 4
%tmp = trunc i32 %x1 to i8
%conv = zext i8 %tmp to i32
%cmp = icmp eq i32 %conv, 127
br i1 %cmp, label %land.lhs.true, label %if.end
land.lhs.true: ; preds = %entry
%arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1
%tmp5 = load i8* %arrayidx4, align 1
%conv6 = zext i8 %tmp5 to i32
%cmp7 = icmp eq i32 %conv6, 69
br i1 %cmp7, label %land.lhs.true9, label %if.end
land.lhs.true9: ; preds = %land.lhs.true
%arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2
%tmp13 = load i8* %arrayidx12, align 1
%conv14 = zext i8 %tmp13 to i32
%cmp15 = icmp eq i32 %conv14, 76
br i1 %cmp15, label %land.lhs.true17, label %if.end
land.lhs.true17: ; preds = %land.lhs.true9
%arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3
%tmp21 = load i8* %arrayidx20, align 1
%conv22 = zext i8 %tmp21 to i32
%cmp23 = icmp eq i32 %conv22, 70
br i1 %cmp23, label %if.then, label %if.end
if.then: ; preds = %land.lhs.true17
%call25 = call i32 (...)* @doo()
br label %if.end
if.end:
ret void
; CHECK-LABEL: @test2(
; CHECK: %x1 = load i32* %xx, align 4
; CHECK-NEXT: icmp eq i32 %x1, 1179403647
; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end
}
; PR6627 - This should all be flattened down to one compare. This is the same
; as test2, except that the initial load is done as an i8 instead of i32, thus
; requiring widening.
define void @test2a(i8* %arrayidx) nounwind ssp {
entry:
%x1 = load i8* %arrayidx, align 4
%conv = zext i8 %x1 to i32
%cmp = icmp eq i32 %conv, 127
br i1 %cmp, label %land.lhs.true, label %if.end
land.lhs.true: ; preds = %entry
%arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1
%tmp5 = load i8* %arrayidx4, align 1
%conv6 = zext i8 %tmp5 to i32
%cmp7 = icmp eq i32 %conv6, 69
br i1 %cmp7, label %land.lhs.true9, label %if.end
land.lhs.true9: ; preds = %land.lhs.true
%arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2
%tmp13 = load i8* %arrayidx12, align 1
%conv14 = zext i8 %tmp13 to i32
%cmp15 = icmp eq i32 %conv14, 76
br i1 %cmp15, label %land.lhs.true17, label %if.end
land.lhs.true17: ; preds = %land.lhs.true9
%arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3
%tmp21 = load i8* %arrayidx20, align 1
%conv22 = zext i8 %tmp21 to i32
%cmp23 = icmp eq i32 %conv22, 70
br i1 %cmp23, label %if.then, label %if.end
if.then: ; preds = %land.lhs.true17
%call25 = call i32 (...)* @doo()
br label %if.end
if.end:
ret void
; CHECK-LABEL: @test2a(
; CHECK: %x1 = load i32* {{.*}}, align 4
; CHECK-NEXT: icmp eq i32 %x1, 1179403647
; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end
}