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llvm-project/llvm/test/CodeGen/X86/wide-integer-cmp.ll

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Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
; RUN: llc -mtriple=i686-linux-gnu %s -o - | FileCheck %s
define i32 @branch_eq(i64 %a, i64 %b) {
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-LABEL: branch_eq:
[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: # %entry
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: xorl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: xorl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: orl %ecx, %eax
; CHECK-NEXT: jne .LBB0_2
[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.1: # %bb1
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB0_2: # %bb2
; CHECK-NEXT: movl $2, %eax
; CHECK-NEXT: retl
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
entry:
%cmp = icmp eq i64 %a, %b
br i1 %cmp, label %bb1, label %bb2
bb1:
ret i32 1
bb2:
ret i32 2
}
define i32 @branch_slt(i64 %a, i64 %b) {
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-LABEL: branch_slt:
[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: # %entry
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: cmpl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: sbbl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: jge .LBB1_2
[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.1: # %bb1
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB1_2: # %bb2
; CHECK-NEXT: movl $2, %eax
; CHECK-NEXT: retl
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
entry:
%cmp = icmp slt i64 %a, %b
br i1 %cmp, label %bb1, label %bb2
bb1:
ret i32 1
bb2:
ret i32 2
}
define i32 @branch_ule(i64 %a, i64 %b) {
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-LABEL: branch_ule:
[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: # %entry
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: cmpl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: sbbl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: jb .LBB2_2
[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.1: # %bb1
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB2_2: # %bb2
; CHECK-NEXT: movl $2, %eax
; CHECK-NEXT: retl
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
entry:
%cmp = icmp ule i64 %a, %b
br i1 %cmp, label %bb1, label %bb2
bb1:
ret i32 1
bb2:
ret i32 2
}
define i32 @set_gt(i64 %a, i64 %b) {
Regen expected tests result. NFC llvm-svn: 294866
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; CHECK-LABEL: set_gt:
[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: # %entry
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: cmpl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: sbbl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: setl %al
; CHECK-NEXT: movzbl %al, %eax
; CHECK-NEXT: retl
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
entry:
%cmp = icmp sgt i64 %a, %b
%res = select i1 %cmp, i32 1, i32 0
ret i32 %res
}
define i32 @test_wide(i128 %a, i128 %b) {
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-LABEL: test_wide:
[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: # %entry
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: pushl %esi
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: .cfi_offset %esi, -8
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
; CHECK-NEXT: cmpl {{[0-9]+}}(%esp), %edx
; CHECK-NEXT: sbbl {{[0-9]+}}(%esp), %esi
Revert "[DAG] Rewrite areNonVolatileConsecutiveLoads to use BaseIndexOffset" This reverts commit r306819 which appears be exposing underlying issues in a stage1 ppc64be build llvm-svn: 306820
2017-06-30 20:56:02 +08:00
; CHECK-NEXT: sbbl {{[0-9]+}}(%esp), %ecx
Rewrite areNonVolatileConsecutiveLoads to use BaseIndexOffset Relanding after rewriting undef.ll test to avoid host-dependant endianness. As discussed in D34087, rewrite areNonVolatileConsecutiveLoads using generic checks. Also, propagate missing local handling from there to BaseIndexOffset checks. Tests of note: * test/CodeGen/X86/build-vector* - Improved. * test/CodeGen/BPF/undef.ll - Improved store alignment allows an additional store merge * test/CodeGen/X86/clear_upper_vector_element_bits.ll - This is a case we already do not handle well. Here, the DAG is improved, but scheduling causes a code size degradation. Reviewers: RKSimon, craig.topper, spatel, andreadb, filcab Subscribers: nemanjai, llvm-commits Differential Revision: https://reviews.llvm.org/D34472 llvm-svn: 307114
2017-07-05 09:21:23 +08:00
; CHECK-NEXT: sbbl {{[0-9]+}}(%esp), %eax
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: jge .LBB4_2
[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.1: # %bb1
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: popl %esi
Correct dwarf unwind information in function epilogue This patch aims to provide correct dwarf unwind information in function epilogue for X86. It consists of two parts. The first part inserts CFI instructions that set appropriate cfa offset and cfa register in emitEpilogue() in X86FrameLowering. This part is X86 specific. The second part is platform independent and ensures that: * CFI instructions do not affect code generation (they are not counted as instructions when tail duplicating or tail merging) * Unwind information remains correct when a function is modified by different passes. This is done in a late pass by analyzing information about cfa offset and cfa register in BBs and inserting additional CFI directives where necessary. Added CFIInstrInserter pass: * analyzes each basic block to determine cfa offset and register are valid at its entry and exit * verifies that outgoing cfa offset and register of predecessor blocks match incoming values of their successors * inserts additional CFI directives at basic block beginning to correct the rule for calculating CFA Having CFI instructions in function epilogue can cause incorrect CFA calculation rule for some basic blocks. This can happen if, due to basic block reordering, or the existence of multiple epilogue blocks, some of the blocks have wrong cfa offset and register values set by the epilogue block above them. CFIInstrInserter is currently run only on X86, but can be used by any target that implements support for adding CFI instructions in epilogue. Patch by Violeta Vukobrat. Differential Revision: https://reviews.llvm.org/D42848 llvm-svn: 330706
2018-04-24 18:32:08 +08:00
; CHECK-NEXT: .cfi_def_cfa_offset 4
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB4_2: # %bb2
Correct dwarf unwind information in function epilogue This patch aims to provide correct dwarf unwind information in function epilogue for X86. It consists of two parts. The first part inserts CFI instructions that set appropriate cfa offset and cfa register in emitEpilogue() in X86FrameLowering. This part is X86 specific. The second part is platform independent and ensures that: * CFI instructions do not affect code generation (they are not counted as instructions when tail duplicating or tail merging) * Unwind information remains correct when a function is modified by different passes. This is done in a late pass by analyzing information about cfa offset and cfa register in BBs and inserting additional CFI directives where necessary. Added CFIInstrInserter pass: * analyzes each basic block to determine cfa offset and register are valid at its entry and exit * verifies that outgoing cfa offset and register of predecessor blocks match incoming values of their successors * inserts additional CFI directives at basic block beginning to correct the rule for calculating CFA Having CFI instructions in function epilogue can cause incorrect CFA calculation rule for some basic blocks. This can happen if, due to basic block reordering, or the existence of multiple epilogue blocks, some of the blocks have wrong cfa offset and register values set by the epilogue block above them. CFIInstrInserter is currently run only on X86, but can be used by any target that implements support for adding CFI instructions in epilogue. Patch by Violeta Vukobrat. Differential Revision: https://reviews.llvm.org/D42848 llvm-svn: 330706
2018-04-24 18:32:08 +08:00
; CHECK-NEXT: .cfi_def_cfa_offset 8
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl $2, %eax
; CHECK-NEXT: popl %esi
Correct dwarf unwind information in function epilogue This patch aims to provide correct dwarf unwind information in function epilogue for X86. It consists of two parts. The first part inserts CFI instructions that set appropriate cfa offset and cfa register in emitEpilogue() in X86FrameLowering. This part is X86 specific. The second part is platform independent and ensures that: * CFI instructions do not affect code generation (they are not counted as instructions when tail duplicating or tail merging) * Unwind information remains correct when a function is modified by different passes. This is done in a late pass by analyzing information about cfa offset and cfa register in BBs and inserting additional CFI directives where necessary. Added CFIInstrInserter pass: * analyzes each basic block to determine cfa offset and register are valid at its entry and exit * verifies that outgoing cfa offset and register of predecessor blocks match incoming values of their successors * inserts additional CFI directives at basic block beginning to correct the rule for calculating CFA Having CFI instructions in function epilogue can cause incorrect CFA calculation rule for some basic blocks. This can happen if, due to basic block reordering, or the existence of multiple epilogue blocks, some of the blocks have wrong cfa offset and register values set by the epilogue block above them. CFIInstrInserter is currently run only on X86, but can be used by any target that implements support for adding CFI instructions in epilogue. Patch by Violeta Vukobrat. Differential Revision: https://reviews.llvm.org/D42848 llvm-svn: 330706
2018-04-24 18:32:08 +08:00
; CHECK-NEXT: .cfi_def_cfa_offset 4
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: retl
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
entry:
%cmp = icmp slt i128 %a, %b
br i1 %cmp, label %bb1, label %bb2
bb1:
ret i32 1
bb2:
ret i32 2
}
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; The comparison of the low bits will be folded to a CARRY_FALSE node. Make
; sure the code can handle that.
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
define i32 @test_carry_false(i64 %a, i64 %b) {
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-LABEL: test_carry_false:
[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: # %entry
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: cmpl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT: jge .LBB5_2
[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.1: # %bb1
Regen expected tests result. NFC llvm-svn: 294866
2017-02-12 03:27:15 +08:00
; CHECK-NEXT: movl $1, %eax
; CHECK-NEXT: retl
; CHECK-NEXT: .LBB5_2: # %bb2
; CHECK-NEXT: movl $2, %eax
; CHECK-NEXT: retl
X86: More efficient legalization of wide integer compares In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
entry:
%x = and i64 %a, -4294967296 ;0xffffffff00000000
%y = and i64 %b, -4294967296
%cmp = icmp slt i64 %x, %y
br i1 %cmp, label %bb1, label %bb2
bb1:
ret i32 1
bb2:
ret i32 2
}