llvm/test/Transforms/GVN/2010-11-13-Simplify.ll

; RUN: opt < %s -basicaa -gvn -S | FileCheck %s

declare i32 @foo(i32) readnone

define i1 @bar() {
; CHECK-LABEL: @bar(
  %a = call i32 @foo (i32 0) readnone
  %b = call i32 @foo (i32 0) readnone
  %c = and i32 %a, %b
  %x = call i32 @foo (i32 %a) readnone
  %y = call i32 @foo (i32 %c) readnone
  %z = icmp eq i32 %x, %y
  ret i1 %z
; CHECK: ret i1 true
}
Testcase to go along with commit 118923 ("Have GVN simplify instructions as it goes"). Before -std-compile-opts only got it down to %a = tail call i32 @foo(i32 0) readnone %x = tail call i32 @foo(i32 %a) readnone %y = tail call i32 @foo(i32 %a) readnone %z = icmp eq i32 %x, %y ret i1 %z while now -basicaa -gvn alone reduce it to %a = call i32 @foo(i32 0) readnone %x = call i32 @foo(i32 %a) readnone ret i1 true git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119009 91177308-0d34-0410-b5e6-96231b3b80d8 2010-11-13 21:33:19 +00:00			`; RUN: opt < %s -basicaa -gvn -S \| FileCheck %s`

			`declare i32 @foo(i32) readnone`

			`define i1 @bar() {`
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186268 91177308-0d34-0410-b5e6-96231b3b80d8 2013-07-14 01:42:54 +00:00			`; CHECK-LABEL: @bar(`
Testcase to go along with commit 118923 ("Have GVN simplify instructions as it goes"). Before -std-compile-opts only got it down to %a = tail call i32 @foo(i32 0) readnone %x = tail call i32 @foo(i32 %a) readnone %y = tail call i32 @foo(i32 %a) readnone %z = icmp eq i32 %x, %y ret i1 %z while now -basicaa -gvn alone reduce it to %a = call i32 @foo(i32 0) readnone %x = call i32 @foo(i32 %a) readnone ret i1 true git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119009 91177308-0d34-0410-b5e6-96231b3b80d8 2010-11-13 21:33:19 +00:00			`%a = call i32 @foo (i32 0) readnone`
			`%b = call i32 @foo (i32 0) readnone`
			`%c = and i32 %a, %b`
			`%x = call i32 @foo (i32 %a) readnone`
			`%y = call i32 @foo (i32 %c) readnone`
			`%z = icmp eq i32 %x, %y`
			`ret i1 %z`
			`; CHECK: ret i1 true`
			`}`