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llvm-project/llvm/test/CodeGen/X86/neg_cmp.ll

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[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
Add x86-specific DAG combine to simplify: x == -y --> x+y == 0 x != -y --> x+y != 0 On x86, the generated code goes from negl %esi cmpl %esi, %edi je .LBB0_2 to addl %esi, %edi je .L4 This case is correctly handled for ARM with "cmn". Patch by Manman Ren. rdar://11245199 PR12545 llvm-svn: 155739
2012-04-28 06:33:25 +08:00
; rdar://11245199
; PR12545
[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
declare void @g()
define void @neg_cmp(i32 %x, i32 %y) nounwind {
; CHECK-LABEL: neg_cmp:
[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
; CHECK: # %bb.0:
[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
; CHECK-NEXT: addl %esi, %edi
; CHECK-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
; CHECK-NEXT: # %bb.2: # %if.then
[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
; CHECK-NEXT: jmp g # TAILCALL
; CHECK-NEXT: .LBB0_1: # %if.end
; CHECK-NEXT: retq
Add x86-specific DAG combine to simplify: x == -y --> x+y == 0 x != -y --> x+y != 0 On x86, the generated code goes from negl %esi cmpl %esi, %edi je .LBB0_2 to addl %esi, %edi je .L4 This case is correctly handled for ARM with "cmn". Patch by Manman Ren. rdar://11245199 PR12545 llvm-svn: 155739
2012-04-28 06:33:25 +08:00
%sub = sub i32 0, %y
%cmp = icmp eq i32 %x, %sub
br i1 %cmp, label %if.then, label %if.end
[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
if.then:
Add x86-specific DAG combine to simplify: x == -y --> x+y == 0 x != -y --> x+y != 0 On x86, the generated code goes from negl %esi cmpl %esi, %edi je .LBB0_2 to addl %esi, %edi je .L4 This case is correctly handled for ARM with "cmn". Patch by Manman Ren. rdar://11245199 PR12545 llvm-svn: 155739
2012-04-28 06:33:25 +08:00
tail call void @g() nounwind
br label %if.end
[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
if.end:
ret void
}
define void @neg_cmp_commuted(i32 %x, i32 %y) nounwind {
; CHECK-LABEL: neg_cmp_commuted:
[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
; CHECK: # %bb.0:
[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
; CHECK-NEXT: addl %esi, %edi
; CHECK-NEXT: jne .LBB1_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
; CHECK-NEXT: # %bb.2: # %if.then
[x86] clean up setcc with negated operand transform and add missing test; NFCI llvm-svn: 298118
2017-03-18 04:29:40 +08:00
; CHECK-NEXT: jmp g # TAILCALL
; CHECK-NEXT: .LBB1_1: # %if.end
; CHECK-NEXT: retq
%sub = sub i32 0, %y
%cmp = icmp eq i32 %sub, %x
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @g() nounwind
br label %if.end
if.end:
Add x86-specific DAG combine to simplify: x == -y --> x+y == 0 x != -y --> x+y != 0 On x86, the generated code goes from negl %esi cmpl %esi, %edi je .LBB0_2 to addl %esi, %edi je .L4 This case is correctly handled for ARM with "cmn". Patch by Manman Ren. rdar://11245199 PR12545 llvm-svn: 155739
2012-04-28 06:33:25 +08:00
ret void
}