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llvm-project/llvm/test/CodeGen/X86/atom-call-reg-indirect.ll

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For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
; RUN: llc < %s -mcpu=atom -mtriple=i686-linux | FileCheck -check-prefix=ATOM32 %s
; RUN: llc < %s -mcpu=core2 -mtriple=i686-linux | FileCheck -check-prefix=ATOM-NOT32 %s
; RUN: llc < %s -mcpu=atom -mtriple=x86_64-linux | FileCheck -check-prefix=ATOM64 %s
; RUN: llc < %s -mcpu=core2 -mtriple=x86_64-linux | FileCheck -check-prefix=ATOM-NOT64 %s
Add Atom Silvermont (slm) tests - check that -mcpu=slm uses the call register indirect optimization - check that -mcpu=slm runs the scheduler - check that -mcpu=slm supports the movbe instruction llvm-svn: 190814
2013-09-17 06:22:07 +08:00
; RUN: llc < %s -mcpu=slm -mtriple=i686-linux | FileCheck -check-prefix=SLM32 %s
; RUN: llc < %s -mcpu=slm -mtriple=x86_64-linux | FileCheck -check-prefix=SLM64 %s
For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
; fn_ptr.ll
%class.A = type { i32 (...)** }
define i32 @test1() #0 {
Update to more CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change. All changes were made by the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" grep -q "^; *RUN: *llc.*debug" $NAME && continue grep -q "^; *RUN:.*llvm-objdump" $NAME && continue grep -q "^; *RUN: *opt.*" $NAME && continue 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/;\([A-Za-z0-9_-]*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC[:]* *\$/;\1\2-LABEL:\3$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 done This script catches a superset of the cases caught by the script associated with commit r186280. It initially found some false positives due to unusual constructs in a minority of tests; all such cases were disambiguated first in commit r186621. llvm-svn: 186624
2013-07-19 06:47:09 +08:00
;ATOM-LABEL: test1:
For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
entry:
%call = tail call %class.A* @_Z3facv()
%0 = bitcast %class.A* %call to void (%class.A*)***
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%vtable = load void (%class.A*)**, void (%class.A*)*** %0, align 8
%1 = load void (%class.A*)*, void (%class.A*)** %vtable, align 8
For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
;ATOM32: movl (%ecx), %ecx
;ATOM32: calll *%ecx
;ATOM-NOT32: calll *(%ecx)
;ATOM64: movq (%rcx), %rcx
;ATOM64: callq *%rcx
;ATOM-NOT64: callq *(%rcx)
Add Atom Silvermont (slm) tests - check that -mcpu=slm uses the call register indirect optimization - check that -mcpu=slm runs the scheduler - check that -mcpu=slm supports the movbe instruction llvm-svn: 190814
2013-09-17 06:22:07 +08:00
;SLM32: movl (%ecx), %ecx
;SLM32: calll *%ecx
;SLM64: movq (%rcx), %rcx
;SLM64: callq *%rcx
For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
tail call void %1(%class.A* %call)
ret i32 0
}
declare %class.A* @_Z3facv() #1
; virt_fn.ll
@p = external global void (i32)**
define i32 @test2() #0 {
Update to more CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change. All changes were made by the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" grep -q "^; *RUN: *llc.*debug" $NAME && continue grep -q "^; *RUN:.*llvm-objdump" $NAME && continue grep -q "^; *RUN: *opt.*" $NAME && continue 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/;\([A-Za-z0-9_-]*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC[:]* *\$/;\1\2-LABEL:\3$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 done This script catches a superset of the cases caught by the script associated with commit r186280. It initially found some false positives due to unusual constructs in a minority of tests; all such cases were disambiguated first in commit r186621. llvm-svn: 186624
2013-07-19 06:47:09 +08:00
;ATOM-LABEL: test2:
For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
entry:
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%0 = load void (i32)**, void (i32)*** @p, align 8
%1 = load void (i32)*, void (i32)** %0, align 8
For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
;ATOM32: movl (%eax), %eax
;ATOM32: calll *%eax
;ATOM-NOT: calll *(%eax)
;ATOM64: movq (%rax), %rax
;ATOM64: callq *%rax
;ATOM-NOT64: callq *(%rax)
Add Atom Silvermont (slm) tests - check that -mcpu=slm uses the call register indirect optimization - check that -mcpu=slm runs the scheduler - check that -mcpu=slm supports the movbe instruction llvm-svn: 190814
2013-09-17 06:22:07 +08:00
;SLM32: movl (%eax), %eax
;SLM32: calll *%eax
;SLM64: movq (%rax), %rax
;SLM64: callq *%rax
For the current Atom processor, the fastest way to handle a call indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
2013-03-28 03:14:02 +08:00
tail call void %1(i32 2)
ret i32 0
}