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llvm-project/llvm/test/CodeGen/X86/lea-opt-cse2.ll

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[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s -check-prefix=X64
; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s -check-prefix=X86
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
%struct.SA = type { i32 , i32 , i32 , i32 , i32};
define void @foo(%struct.SA* nocapture %ctx, i32 %n) local_unnamed_addr #0 {
; X64-LABEL: foo:
[CodeGen] Unify MBB reference format in both MIR and debug output As part of the unification of the debug format and the MIR format, print MBB references as '%bb.5'. The MIR printer prints the IR name of a MBB only for block definitions. * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g' * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g' * find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g' * grep -nr 'BB#' and fix Differential Revision: https://reviews.llvm.org/D40422 llvm-svn: 319665
2017-12-05 01:18:51 +08:00
; X64: # %bb.0: # %entry
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; X64-NEXT: .p2align 4, 0x90
; X64-NEXT: .LBB0_1: # %loop
; X64-NEXT: # =>This Inner Loop Header: Depth=1
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; X64-NEXT: movl (%rdi), %eax
; X64-NEXT: movl 16(%rdi), %ecx
; X64-NEXT: leal 1(%rax,%rcx), %edx
; X64-NEXT: movl %edx, 12(%rdi)
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; X64-NEXT: decl %esi
; X64-NEXT: jne .LBB0_1
[CodeGen] Unify MBB reference format in both MIR and debug output As part of the unification of the debug format and the MIR format, print MBB references as '%bb.5'. The MIR printer prints the IR name of a MBB only for block definitions. * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g' * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g' * find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g' * grep -nr 'BB#' and fix Differential Revision: https://reviews.llvm.org/D40422 llvm-svn: 319665
2017-12-05 01:18:51 +08:00
; X64-NEXT: # %bb.2: # %exit
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; X64-NEXT: addl %ecx, %eax
; X64-NEXT: leal 1(%rcx,%rax), %eax
; X64-NEXT: movl %eax, 16(%rdi)
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; X64-NEXT: retq
;
; X86-LABEL: foo:
[CodeGen] Unify MBB reference format in both MIR and debug output As part of the unification of the debug format and the MIR format, print MBB references as '%bb.5'. The MIR printer prints the IR name of a MBB only for block definitions. * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g' * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g' * find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g' * grep -nr 'BB#' and fix Differential Revision: https://reviews.llvm.org/D40422 llvm-svn: 319665
2017-12-05 01:18:51 +08:00
; X86: # %bb.0: # %entry
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; X86-NEXT: pushl %edi
[X86] Improvement in CodeGen instruction selection for LEAs. Summary: 1/ Operand folding during complex pattern matching for LEAs has been extended, such that it promotes Scale to accommodate similar operand appearing in the DAG e.g. T1 = A + B T2 = T1 + 10 T3 = T2 + A For above DAG rooted at T3, X86AddressMode will now look like Base = B , Index = A , Scale = 2 , Disp = 10 2/ During OptimizeLEAPass down the pipeline factorization is now performed over LEAs so that if there is an opportunity then complex LEAs (having 3 operands) could be factored out e.g. leal 1(%rax,%rcx,1), %rdx leal 1(%rax,%rcx,2), %rcx will be factored as following leal 1(%rax,%rcx,1), %rdx leal (%rdx,%rcx) , %edx 3/ Aggressive operand folding for AM based selection for LEAs is sensitive to loops, thus avoiding creation of any complex LEAs within a loop. 4/ Simplify LEA converts (lea (BASE,1,INDEX,0) --> add (BASE, INDEX) which offers better through put. PR32755 will be taken care of by this pathc. Previous patch revisions : r313343 , r314886 Reviewers: lsaba, RKSimon, craig.topper, qcolombet, jmolloy, jbhateja Reviewed By: lsaba, RKSimon, jbhateja Subscribers: jmolloy, spatel, igorb, llvm-commits Differential Revision: https://reviews.llvm.org/D35014 llvm-svn: 319543
2017-12-01 22:07:38 +08:00
; X86-NEXT: .cfi_def_cfa_offset 8
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; X86-NEXT: pushl %esi
; X86-NEXT: .cfi_def_cfa_offset 12
; X86-NEXT: .cfi_offset %esi, -12
; X86-NEXT: .cfi_offset %edi, -8
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: .p2align 4, 0x90
; X86-NEXT: .LBB0_1: # %loop
; X86-NEXT: # =>This Inner Loop Header: Depth=1
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; X86-NEXT: movl (%eax), %edx
; X86-NEXT: movl 16(%eax), %esi
; X86-NEXT: leal 1(%edx,%esi), %edi
; X86-NEXT: movl %edi, 12(%eax)
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; X86-NEXT: decl %ecx
; X86-NEXT: jne .LBB0_1
[CodeGen] Unify MBB reference format in both MIR and debug output As part of the unification of the debug format and the MIR format, print MBB references as '%bb.5'. The MIR printer prints the IR name of a MBB only for block definitions. * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g' * find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g' * find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g' * grep -nr 'BB#' and fix Differential Revision: https://reviews.llvm.org/D40422 llvm-svn: 319665
2017-12-05 01:18:51 +08:00
; X86-NEXT: # %bb.2: # %exit
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; X86-NEXT: addl %esi, %edx
; X86-NEXT: leal 1(%esi,%edx), %ecx
; X86-NEXT: movl %ecx, 16(%eax)
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; X86-NEXT: popl %esi
Revert "[X86] Improvement in CodeGen instruction selection for LEAs." This reverts r319543, due to ASan bot breakage. llvm-svn: 319591
2017-12-02 06:20:26 +08:00
; X86-NEXT: popl %edi
[X86] Adding test cases for LEA factorization (PR32755 / D35014) Differential Revision: https://reviews.llvm.org/D35886 llvm-svn: 309262
2017-07-27 18:36:09 +08:00
; X86-NEXT: retl
entry:
br label %loop
loop:
%iter = phi i32 [%n ,%entry ] ,[ %iter.ctr ,%loop]
%h0 = getelementptr inbounds %struct.SA, %struct.SA* %ctx, i64 0, i32 0
%0 = load i32, i32* %h0, align 8
%h3 = getelementptr inbounds %struct.SA, %struct.SA* %ctx, i64 0, i32 3
%h4 = getelementptr inbounds %struct.SA, %struct.SA* %ctx, i64 0, i32 4
%1 = load i32, i32* %h4, align 8
%add = add i32 %0, 1
%add4 = add i32 %add, %1
store i32 %add4, i32* %h3, align 4
%add29 = add i32 %add4, %1
%iter.ctr = sub i32 %iter , 1
%res = icmp ne i32 %iter.ctr , 0
br i1 %res , label %loop , label %exit
exit:
store i32 %add29, i32* %h4, align 8
ret void
}