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llvm-project/llvm/test/Transforms/InstCombine/signext.ll

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remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; RUN: opt < %s -instcombine -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:n8:16:32:64"
All of these should turn into sign extends (e.g. extsh/extsb on PPC) llvm-svn: 23427
2005-09-25 07:42:18 +08:00
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
define i32 @test1(i32 %x) {
%tmp.1 = and i32 %x, 65535 ; <i32> [#uses=1]
%tmp.2 = xor i32 %tmp.1, -32768 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, 32768 ; <i32> [#uses=1]
ret i32 %tmp.3
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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test1(
Simplify/generalize the xor+add->sign-extend instcombine. llvm-svn: 94943
2010-01-31 12:29:12 +08:00
; CHECK: %sext = shl i32 %x, 16
Enhance a bunch of transformations in instcombine to start generating exact/nsw/nuw shifts and have instcombine infer them when it can prove that the relevant properties are true for a given shift without them. Also, a variety of refactoring to use the new patternmatch logic thrown in for good luck. I believe that this takes care of a bunch of related code quality issues attached to PR8862. llvm-svn: 125267
2011-02-10 13:36:31 +08:00
; CHECK: %tmp.3 = ashr exact i32 %sext, 16
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; CHECK: ret i32 %tmp.3
All of these should turn into sign extends (e.g. extsh/extsb on PPC) llvm-svn: 23427
2005-09-25 07:42:18 +08:00
}
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
define i32 @test2(i32 %x) {
%tmp.1 = and i32 %x, 65535 ; <i32> [#uses=1]
%tmp.2 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, -32768 ; <i32> [#uses=1]
ret i32 %tmp.3
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test2(
Simplify/generalize the xor+add->sign-extend instcombine. llvm-svn: 94943
2010-01-31 12:29:12 +08:00
; CHECK: %sext = shl i32 %x, 16
Enhance a bunch of transformations in instcombine to start generating exact/nsw/nuw shifts and have instcombine infer them when it can prove that the relevant properties are true for a given shift without them. Also, a variety of refactoring to use the new patternmatch logic thrown in for good luck. I believe that this takes care of a bunch of related code quality issues attached to PR8862. llvm-svn: 125267
2011-02-10 13:36:31 +08:00
; CHECK: %tmp.3 = ashr exact i32 %sext, 16
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; CHECK: ret i32 %tmp.3
All of these should turn into sign extends (e.g. extsh/extsb on PPC) llvm-svn: 23427
2005-09-25 07:42:18 +08:00
}
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
define i32 @test3(i16 %P) {
%tmp.1 = zext i16 %P to i32 ; <i32> [#uses=1]
%tmp.4 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.5 = add i32 %tmp.4, -32768 ; <i32> [#uses=1]
ret i32 %tmp.5
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test3(
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; CHECK: %tmp.5 = sext i16 %P to i32
; CHECK: ret i32 %tmp.5
All of these should turn into sign extends (e.g. extsh/extsb on PPC) llvm-svn: 23427
2005-09-25 07:42:18 +08:00
}
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
define i32 @test4(i16 %P) {
%tmp.1 = zext i16 %P to i32 ; <i32> [#uses=1]
%tmp.4 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.5 = add i32 %tmp.4, -32768 ; <i32> [#uses=1]
ret i32 %tmp.5
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test4(
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; CHECK: %tmp.5 = sext i16 %P to i32
; CHECK: ret i32 %tmp.5
All of these should turn into sign extends (e.g. extsh/extsb on PPC) llvm-svn: 23427
2005-09-25 07:42:18 +08:00
}
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
define i32 @test5(i32 %x) {
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
%tmp.1 = and i32 %x, 255 ; <i32> [#uses=1]
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
%tmp.2 = xor i32 %tmp.1, 128 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, -128 ; <i32> [#uses=1]
ret i32 %tmp.3
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test5(
Simplify/generalize the xor+add->sign-extend instcombine. llvm-svn: 94943
2010-01-31 12:29:12 +08:00
; CHECK: %sext = shl i32 %x, 24
Enhance a bunch of transformations in instcombine to start generating exact/nsw/nuw shifts and have instcombine infer them when it can prove that the relevant properties are true for a given shift without them. Also, a variety of refactoring to use the new patternmatch logic thrown in for good luck. I believe that this takes care of a bunch of related code quality issues attached to PR8862. llvm-svn: 125267
2011-02-10 13:36:31 +08:00
; CHECK: %tmp.3 = ashr exact i32 %sext, 24
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; CHECK: ret i32 %tmp.3
All of these should turn into sign extends (e.g. extsh/extsb on PPC) llvm-svn: 23427
2005-09-25 07:42:18 +08:00
}
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
define i32 @test6(i32 %x) {
%tmp.2 = shl i32 %x, 16 ; <i32> [#uses=1]
%tmp.4 = ashr i32 %tmp.2, 16 ; <i32> [#uses=1]
ret i32 %tmp.4
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test6(
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; CHECK: %tmp.2 = shl i32 %x, 16
Enhance a bunch of transformations in instcombine to start generating exact/nsw/nuw shifts and have instcombine infer them when it can prove that the relevant properties are true for a given shift without them. Also, a variety of refactoring to use the new patternmatch logic thrown in for good luck. I believe that this takes care of a bunch of related code quality issues attached to PR8862. llvm-svn: 125267
2011-02-10 13:36:31 +08:00
; CHECK: %tmp.4 = ashr exact i32 %tmp.2, 16
remove a redundant test, filecheckize another. llvm-svn: 93774
2010-01-19 05:55:43 +08:00
; CHECK: ret i32 %tmp.4
All of these should turn into sign extends (e.g. extsh/extsb on PPC) llvm-svn: 23427
2005-09-25 07:42:18 +08:00
}
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
my instcombine transformations to make extension elimination more aggressive changed the canonical form from sext(trunc(x)) to ashr(lshr(x)), make sure to transform a couple more things into that canonical form, and catch a case where we missed turning zext/shl/ashr into a single sext. llvm-svn: 93787
2010-01-19 06:19:16 +08:00
define i32 @test7(i16 %P) {
%tmp.1 = zext i16 %P to i32 ; <i32> [#uses=1]
%sext1 = shl i32 %tmp.1, 16 ; <i32> [#uses=1]
%tmp.5 = ashr i32 %sext1, 16 ; <i32> [#uses=1]
ret i32 %tmp.5
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 $NAME fi done llvm-svn: 186268
2013-07-14 09:42:54 +08:00
; CHECK-LABEL: @test7(
my instcombine transformations to make extension elimination more aggressive changed the canonical form from sext(trunc(x)) to ashr(lshr(x)), make sure to transform a couple more things into that canonical form, and catch a case where we missed turning zext/shl/ashr into a single sext. llvm-svn: 93787
2010-01-19 06:19:16 +08:00
; CHECK: %tmp.5 = sext i16 %P to i32
; CHECK: ret i32 %tmp.5
}
Simplify/generalize the xor+add->sign-extend instcombine. llvm-svn: 94943
2010-01-31 12:29:12 +08:00
define i32 @test8(i32 %x) nounwind readnone {
entry:
%shr = lshr i32 %x, 5 ; <i32> [#uses=1]
%xor = xor i32 %shr, 67108864 ; <i32> [#uses=1]
%sub = add i32 %xor, -67108864 ; <i32> [#uses=1]
ret i32 %sub
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$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 09:42:54 +08:00
; CHECK-LABEL: @test8(
rdar://12329730 (2nd part) This change tries to simmplify E1 = " X >> C1 << C2" into : - E2 = "X << (C2 - C1)" if C2 > C1, or - E2 = "X >> (C1 - C2)" if C1 > C2, or - E2 = X if C1 == C2. Reviewed by Nadav. Thanks! llvm-svn: 169182
2012-12-04 08:04:54 +08:00
; CHECK: %sub = ashr i32 %x, 5
; CHECK: ret i32 %sub
Simplify/generalize the xor+add->sign-extend instcombine. llvm-svn: 94943
2010-01-31 12:29:12 +08:00
}