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llvm-mirror/test/Transforms/ScalarRepl/nonzero-first-index.ll

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Generalize SROA to allow the first index of a GEP to be non-zero. Add a missing check that an array reference doesn't go past the end of the array, and remove some redundant checks for in-bound array and vector references that are no longer needed. llvm-svn: 91897
2009-12-22 07:57:14 +01:00
; RUN: opt < %s -scalarrepl -S | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
target triple = "i386-pc-linux-gnu"
%nested = type { i32, [4 x i32] }
; Check that a GEP with a non-zero first index does not prevent SROA as long
; as the resulting offset corresponds to an element in the alloca.
define i32 @test1() {
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 $NAME fi done llvm-svn: 186268
2013-07-14 03:42:54 +02:00
; CHECK-LABEL: @test1(
Generalize SROA to allow the first index of a GEP to be non-zero. Add a missing check that an array reference doesn't go past the end of the array, and remove some redundant checks for in-bound array and vector references that are no longer needed. llvm-svn: 91897
2009-12-22 07:57:14 +01:00
; CHECK-NOT: = i160
; CHECK: ret i32 undef
%A = alloca %nested
%B = getelementptr %nested* %A, i32 0, i32 1, i32 0
%C = getelementptr i32* %B, i32 2
%D = load i32* %C
ret i32 %D
}
; But, if the offset is out of range, then it should not be transformed.
define i32 @test2() {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 03:42:54 +02:00
; CHECK-LABEL: @test2(
Generalize SROA to allow the first index of a GEP to be non-zero. Add a missing check that an array reference doesn't go past the end of the array, and remove some redundant checks for in-bound array and vector references that are no longer needed. llvm-svn: 91897
2009-12-22 07:57:14 +01:00
; CHECK: i160
%A = alloca %nested
%B = getelementptr %nested* %A, i32 0, i32 1, i32 0
%C = getelementptr i32* %B, i32 4
%D = load i32* %C
ret i32 %D
}
; Try it with a bitcast and single GEP....
define i32 @test3() {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 03:42:54 +02:00
; CHECK-LABEL: @test3(
Generalize SROA to allow the first index of a GEP to be non-zero. Add a missing check that an array reference doesn't go past the end of the array, and remove some redundant checks for in-bound array and vector references that are no longer needed. llvm-svn: 91897
2009-12-22 07:57:14 +01:00
; CHECK-NOT: = i160
; CHECK: ret i32 undef
%A = alloca %nested
%B = bitcast %nested* %A to i32*
%C = getelementptr i32* %B, i32 2
%D = load i32* %C
ret i32 %D
}
; ...and again make sure that out-of-range accesses are not transformed.
define i32 @test4() {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 03:42:54 +02:00
; CHECK-LABEL: @test4(
Generalize SROA to allow the first index of a GEP to be non-zero. Add a missing check that an array reference doesn't go past the end of the array, and remove some redundant checks for in-bound array and vector references that are no longer needed. llvm-svn: 91897
2009-12-22 07:57:14 +01:00
; CHECK: i160
%A = alloca %nested
%B = bitcast %nested* %A to i32*
%C = getelementptr i32* %B, i32 -1
%D = load i32* %C
ret i32 %D
}
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