llvm-project/llvm/test/CodeGen/X86/test-vs-bittest.ll

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
define void @test64(i64 inreg %x) {
; CHECK-LABEL: test64:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: testl $2048, %edi # imm = 0x800
; CHECK-NEXT: jne .LBB0_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB0_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 2048
%s = icmp eq i64 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
define void @test64_optsize(i64 inreg %x) optsize {
; CHECK-LABEL: test64_optsize:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btl $11, %edi
; CHECK-NEXT: jb .LBB1_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB1_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 2048
%s = icmp eq i64 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
; This test is identical to test64 above with only the destination of the br
; reversed. This somehow causes the two functions to get slightly different
; initial IR. One has an extra invert of the setcc. This previous caused one
; the functions to use a BT while the other used a TEST due to another DAG
; combine messing with an expected canonical form.
define void @test64_2(i64 inreg %x) {
; CHECK-LABEL: test64_2:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: testl $2048, %edi # imm = 0x800
; CHECK-NEXT: je .LBB2_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB2_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 2048
%s = icmp eq i64 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define void @test64_optsize_2(i64 inreg %x) optsize {
; CHECK-LABEL: test64_optsize_2:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btl $11, %edi
; CHECK-NEXT: jae .LBB3_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB3_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 2048
%s = icmp eq i64 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define void @test64_3(i64 inreg %x) {
; CHECK-LABEL: test64_3:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btq $32, %rdi
; CHECK-NEXT: jb .LBB4_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB4_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 4294967296
%s = icmp eq i64 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
define void @test64_optsize_3(i64 inreg %x) optsize {
; CHECK-LABEL: test64_optsize_3:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btq $32, %rdi
; CHECK-NEXT: jb .LBB5_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB5_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 4294967296
%s = icmp eq i64 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
define void @test64_4(i64 inreg %x) {
; CHECK-LABEL: test64_4:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btq $32, %rdi
; CHECK-NEXT: jae .LBB6_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB6_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 4294967296
%s = icmp eq i64 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define void @test64_optsize_4(i64 inreg %x) optsize {
; CHECK-LABEL: test64_optsize_4:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btq $32, %rdi
; CHECK-NEXT: jae .LBB7_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB7_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i64 %x, 4294967296
%s = icmp eq i64 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define void @test32(i32 inreg %x) {
; CHECK-LABEL: test32:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: testl $2048, %edi # imm = 0x800
; CHECK-NEXT: jne .LBB8_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB8_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i32 %x, 2048
%s = icmp eq i32 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
define void @test32_optsize(i32 inreg %x) optsize {
; CHECK-LABEL: test32_optsize:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btl $11, %edi
; CHECK-NEXT: jb .LBB9_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB9_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i32 %x, 2048
%s = icmp eq i32 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
define void @test32_2(i32 inreg %x) {
; CHECK-LABEL: test32_2:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: testl $2048, %edi # imm = 0x800
; CHECK-NEXT: je .LBB10_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB10_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i32 %x, 2048
%s = icmp eq i32 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define void @test32_optsize_2(i32 inreg %x) optsize {
; CHECK-LABEL: test32_optsize_2:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btl $11, %edi
; CHECK-NEXT: jae .LBB11_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB11_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i32 %x, 2048
%s = icmp eq i32 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define void @test16(i16 inreg %x) {
; CHECK-LABEL: test16:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: testl $2048, %edi # imm = 0x800
; CHECK-NEXT: jne .LBB12_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB12_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i16 %x, 2048
%s = icmp eq i16 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
define void @test16_optsize(i16 inreg %x) optsize {
; CHECK-LABEL: test16_optsize:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btl $11, %edi
; CHECK-NEXT: jb .LBB13_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB13_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i16 %x, 2048
%s = icmp eq i16 %t, 0
br i1 %s, label %yes, label %no
yes:
call void @bar()
ret void
no:
ret void
}
define void @test16_2(i16 inreg %x) {
; CHECK-LABEL: test16_2:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: testl $2048, %edi # imm = 0x800
; CHECK-NEXT: je .LBB14_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB14_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i16 %x, 2048
%s = icmp eq i16 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define void @test16_optsize_2(i16 inreg %x) optsize {
; CHECK-LABEL: test16_optsize_2:
; CHECK: # %bb.0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: btl $11, %edi
; CHECK-NEXT: jae .LBB15_2
; CHECK-NEXT: # %bb.1: # %yes
; CHECK-NEXT: callq bar
; CHECK-NEXT: .LBB15_2: # %no
; CHECK-NEXT: popq %rax
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
; CHECK-NEXT: retq
%t = and i16 %x, 2048
%s = icmp eq i16 %t, 0
br i1 %s, label %no, label %yes
yes:
call void @bar()
ret void
no:
ret void
}
define i64 @is_upper_bit_clear_i64(i64 %x) {
; CHECK-LABEL: is_upper_bit_clear_i64:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: shrq $37, %rax
; CHECK-NEXT: notl %eax
; CHECK-NEXT: andl $1, %eax
; CHECK-NEXT: retq
%sh = lshr i64 %x, 37
%m = and i64 %sh, 1
%r = xor i64 %m, 1
ret i64 %r
}
define i64 @is_lower_bit_clear_i64(i64 %x) {
; CHECK-LABEL: is_lower_bit_clear_i64:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: shrl $27, %eax
; CHECK-NEXT: notl %eax
; CHECK-NEXT: andl $1, %eax
; CHECK-NEXT: retq
%sh = lshr i64 %x, 27
%m = and i64 %sh, 1
%r = xor i64 %m, 1
ret i64 %r
}
define i32 @is_bit_clear_i32(i32 %x) {
; CHECK-LABEL: is_bit_clear_i32:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: shrl $27, %eax
; CHECK-NEXT: notl %eax
; CHECK-NEXT: andl $1, %eax
; CHECK-NEXT: retq
%sh = lshr i32 %x, 27
%n = xor i32 %sh, -1
%r = and i32 %n, 1
ret i32 %r
}
define i16 @is_bit_clear_i16(i16 %x) {
; CHECK-LABEL: is_bit_clear_i16:
; CHECK: # %bb.0:
; CHECK-NEXT: movzwl %di, %eax
; CHECK-NEXT: shrl $7, %eax
; CHECK-NEXT: notl %eax
; CHECK-NEXT: andl $1, %eax
; CHECK-NEXT: # kill: def $ax killed $ax killed $eax
; CHECK-NEXT: retq
%sh = lshr i16 %x, 7
%m = and i16 %sh, 1
%r = xor i16 %m, 1
ret i16 %r
}
define i8 @is_bit_clear_i8(i8 %x) {
; CHECK-LABEL: is_bit_clear_i8:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: shrb $3, %al
; CHECK-NEXT: notb %al
; CHECK-NEXT: andb $1, %al
; CHECK-NEXT: # kill: def $al killed $al killed $eax
; CHECK-NEXT: retq
%sh = lshr i8 %x, 3
%m = and i8 %sh, 1
%r = xor i8 %m, 1
ret i8 %r
}
define i8 @overshift(i64 %x) {
; CHECK-LABEL: overshift:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: shrq $42, %rax
; CHECK-NEXT: notb %al
; CHECK-NEXT: andb $1, %al
; CHECK-NEXT: # kill: def $al killed $al killed $rax
; CHECK-NEXT: retq
%a = lshr i64 %x, 42
%t = trunc i64 %a to i8
%n = xor i8 %t, -1
%r = and i8 %n, 1
ret i8 %r
}
define i32 @setcc_is_bit_clear(i32 %x) {
; CHECK-LABEL: setcc_is_bit_clear:
; CHECK: # %bb.0:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: testl $1024, %edi # imm = 0x400
; CHECK-NEXT: sete %al
; CHECK-NEXT: retq
%a1 = and i32 %x, 1024
%b1 = icmp eq i32 %a1, 0
%r = zext i1 %b1 to i32
ret i32 %r
}
define i32 @is_bit_set(i32 %x) {
; CHECK-LABEL: is_bit_set:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: shrl $10, %eax
; CHECK-NEXT: andl $1, %eax
; CHECK-NEXT: retq
%sh = lshr i32 %x, 10
%m = and i32 %sh, 1
ret i32 %m
}
define i32 @setcc_is_bit_set(i32 %x) {
; CHECK-LABEL: setcc_is_bit_set:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: shrl $10, %eax
; CHECK-NEXT: andl $1, %eax
; CHECK-NEXT: retq
%a1 = and i32 %x, 1024
%b1 = icmp ne i32 %a1, 0
%r = zext i1 %b1 to i32
ret i32 %r
}
declare void @bar()