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llvm-project/llvm/test/Transforms/GVN/readattrs.ll

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Eliminate trivial redundant loads across nocapture+readonly calls to uncaptured pointer arguments. llvm-svn: 185776
2013-07-07 18:15:16 +08:00
; RUN: opt -gvn -S -o - < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-unknown-linux-gnu"
declare void @use(i8* readonly nocapture)
define i8 @test() {
%a = alloca i8
store i8 1, i8* %a
call void @use(i8* %a)
%b = load i8* %a
ret i8 %b
Catch more CHECK that can be converted to CHECK-LABEL in Transforms for easier debugging. No functionality change. This conversion 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/;\(.*\)\([A-Za-z0-9_]*\):\( *\)define\([^@]*\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3define\4@$FUNC(/g" $TEMP done mv $TEMP $NAME fi done llvm-svn: 186269
2013-07-14 09:50:49 +08:00
; CHECK-LABEL: define i8 @test(
Eliminate trivial redundant loads across nocapture+readonly calls to uncaptured pointer arguments. llvm-svn: 185776
2013-07-07 18:15:16 +08:00
; CHECK: call void @use(i8* %a)
; CHECK-NEXT: ret i8 1
}