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llvm-mirror/test/CodeGen/SystemZ/memcpy-01.ll

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[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; Test memcpy using MVC.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare void @llvm.memcpy.p0i8.p0i8.i32(i8 *nocapture, i8 *nocapture, i32, i32, i1) nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8 *nocapture, i8 *nocapture, i64, i32, i1) nounwind
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
declare void @foo(i8 *, i8 *)
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test a no-op move, i32 version.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f1(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f1:
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK-NOT: %r2
; CHECK-NOT: %r3
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 0, i32 1,
i1 false)
ret void
}
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test a no-op move, i64 version.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f2(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f2:
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK-NOT: %r2
; CHECK-NOT: %r3
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 0, i32 1,
i1 false)
ret void
}
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test a 1-byte move, i32 version.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f3(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f3:
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK: mvc 0(1,%r2), 0(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 1, i32 1,
i1 false)
ret void
}
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test a 1-byte move, i64 version.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f4(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f4:
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK: mvc 0(1,%r2), 0(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1, i32 1,
i1 false)
ret void
}
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test the upper range of a single MVC, i32 version.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f5(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f5:
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 256, i32 1,
i1 false)
ret void
}
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test the upper range of a single MVC, i64 version.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f6(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f6:
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 256, i32 1,
i1 false)
ret void
}
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test the first case that needs two MVCs.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f7(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f7:
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: mvc 256(1,%r2), 256(%r3)
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 257, i32 1,
i1 false)
ret void
}
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; Test the last-but-one case that needs two MVCs.
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
define void @f8(i8 *%dest, i8 *%src) {
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $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 sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
2013-07-14 08:24:09 +02:00
; CHECK-LABEL: f8:
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: mvc 256(255,%r2), 256(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 511, i32 1,
i1 false)
ret void
}
; Test the last case that needs two MVCs.
define void @f9(i8 *%dest, i8 *%src) {
; CHECK-LABEL: f9:
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: mvc 256(256,%r2), 256(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 512, i32 1,
i1 false)
ret void
}
; Test an arbitrary value that uses straight-line code.
define void @f10(i8 *%dest, i8 *%src) {
; CHECK-LABEL: f10:
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: mvc 256(256,%r2), 256(%r3)
; CHECK: mvc 512(256,%r2), 512(%r3)
; CHECK: mvc 768(256,%r2), 768(%r3)
; CHECK: mvc 1024(255,%r2), 1024(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
i1 false)
ret void
}
; ...and again in cases where not all parts are in range of MVC.
define void @f11(i8 *%srcbase, i8 *%destbase) {
; CHECK-LABEL: f11:
; CHECK: mvc 4000(256,%r2), 3500(%r3)
; CHECK: lay [[NEWDEST:%r[1-5]]], 4256(%r2)
; CHECK: mvc 0(256,[[NEWDEST]]), 3756(%r3)
; CHECK: mvc 256(256,[[NEWDEST]]), 4012(%r3)
; CHECK: lay [[NEWSRC:%r[1-5]]], 4268(%r3)
; CHECK: mvc 512(256,[[NEWDEST]]), 0([[NEWSRC]])
; CHECK: mvc 768(255,[[NEWDEST]]), 256([[NEWSRC]])
; CHECK: br %r14
%dest = getelementptr i8 *%srcbase, i64 4000
%src = getelementptr i8* %destbase, i64 3500
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
i1 false)
ret void
}
; ...and again with a destination frame base that goes out of range.
define void @f12() {
; CHECK-LABEL: f12:
; CHECK: brasl %r14, foo@PLT
; CHECK: mvc 4076(256,%r15), 2100(%r15)
; CHECK: lay [[NEWDEST:%r[1-5]]], 4332(%r15)
; CHECK: mvc 0(256,[[NEWDEST]]), 2356(%r15)
; CHECK: mvc 256(256,[[NEWDEST]]), 2612(%r15)
; CHECK: mvc 512(256,[[NEWDEST]]), 2868(%r15)
; CHECK: mvc 768(255,[[NEWDEST]]), 3124(%r15)
; CHECK: brasl %r14, foo@PLT
; CHECK: br %r14
%arr = alloca [6000 x i8]
%dest = getelementptr [6000 x i8] *%arr, i64 0, i64 3900
%src = getelementptr [6000 x i8] *%arr, i64 0, i64 1924
call void @foo(i8 *%dest, i8 *%src)
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
i1 false)
call void @foo(i8 *%dest, i8 *%src)
ret void
}
; ...and again with a source frame base that goes out of range.
define void @f13() {
; CHECK-LABEL: f13:
; CHECK: brasl %r14, foo@PLT
; CHECK: mvc 200(256,%r15), 3826(%r15)
; CHECK: mvc 456(256,%r15), 4082(%r15)
; CHECK: lay [[NEWSRC:%r[1-5]]], 4338(%r15)
; CHECK: mvc 712(256,%r15), 0([[NEWSRC]])
; CHECK: mvc 968(256,%r15), 256([[NEWSRC]])
; CHECK: mvc 1224(255,%r15), 512([[NEWSRC]])
; CHECK: brasl %r14, foo@PLT
; CHECK: br %r14
%arr = alloca [6000 x i8]
%dest = getelementptr [6000 x i8] *%arr, i64 0, i64 24
%src = getelementptr [6000 x i8] *%arr, i64 0, i64 3650
call void @foo(i8 *%dest, i8 *%src)
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
i1 false)
call void @foo(i8 *%dest, i8 *%src)
ret void
}
; Test the last case that is done using straight-line code.
define void @f14(i8 *%dest, i8 *%src) {
; CHECK-LABEL: f14:
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: mvc 256(256,%r2), 256(%r3)
; CHECK: mvc 512(256,%r2), 512(%r3)
; CHECK: mvc 768(256,%r2), 768(%r3)
; CHECK: mvc 1024(256,%r2), 1024(%r3)
; CHECK: mvc 1280(256,%r2), 1280(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1536, i32 1,
i1 false)
ret void
}
; Test the first case that is done using a loop.
define void @f15(i8 *%dest, i8 *%src) {
; CHECK-LABEL: f15:
; CHECK: lghi [[COUNT:%r[0-5]]], 6
; CHECK: [[LABEL:\.L[^:]*]]:
; CHECK: pfd 2, 768(%r2)
; CHECK: mvc 0(256,%r2), 0(%r3)
; CHECK: la %r2, 256(%r2)
; CHECK: la %r3, 256(%r3)
; CHECK: brctg [[COUNT]], [[LABEL]]
; CHECK: mvc 0(1,%r2), 0(%r3)
; CHECK: br %r14
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1537, i32 1,
i1 false)
ret void
}
; ...and again with frame bases, where the base must be loaded into a
; register before the loop.
define void @f16() {
; CHECK-LABEL: f16:
; CHECK: brasl %r14, foo@PLT
; CHECK-DAG: lghi [[COUNT:%r[0-5]]], 6
; CHECK-DAG: la [[BASE:%r[0-5]]], 160(%r15)
; CHECK: [[LABEL:\.L[^:]*]]:
; CHECK: pfd 2, 2368([[BASE]])
; CHECK: mvc 1600(256,[[BASE]]), 0([[BASE]])
; CHECK: la [[BASE]], 256([[BASE]])
; CHECK: brctg [[COUNT]], [[LABEL]]
; CHECK: mvc 1600(1,[[BASE]]), 0([[BASE]])
; CHECK: brasl %r14, foo@PLT
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
; CHECK: br %r14
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
%arr = alloca [3200 x i8]
%dest = getelementptr [3200 x i8] *%arr, i64 0, i64 1600
%src = getelementptr [3200 x i8] *%arr, i64 0, i64 0
call void @foo(i8 *%dest, i8 *%src)
call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1537, i32 1,
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
i1 false)
[SystemZ] Extend memcpy and memset support to all constant lengths Lengths up to a certain threshold (currently 6 * 256) use a series of MVCs. Lengths above that threshold use a loop to handle X*256 bytes followed by a single MVC to handle the excess (if any). This loop will also be needed in future when support for variable lengths is added. Because the same tablegen classes are used to define MVC and CLC, the patch also has the side-effect of defining a pseudo loop instruction for CLC. That instruction isn't used yet (and wouldn't be handled correctly if it were). I'm planning to use it soon though. llvm-svn: 189331
2013-08-27 11:54:29 +02:00
call void @foo(i8 *%dest, i8 *%src)
[SystemZ] Use MVC for memcpy Use MVC for memcpy in cases where a single MVC is enough. Using MVC is a win for longer copies too, but I'll leave that for later. llvm-svn: 185802
2013-07-08 11:35:23 +02:00
ret void
}
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