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[X86] Add some basic tests for PR46809
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@RKSimon
RKSimon committed Jan 23, 2022
1 parent ab47563 commit 7c77df1
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177 changes: 177 additions & 0 deletions llvm/test/CodeGen/X86/select-lea.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 --check-prefixes=X64
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+cmov | FileCheck %s --check-prefixes=CMOV
; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefixes=NOCMOV

; PR46809

define i32 @sadd_add_imm(i32 %x, i32 %y) {
; X64-LABEL: sadd_add_imm:
; X64: # %bb.0:
; X64-NEXT: # kill: def $esi killed $esi def $rsi
; X64-NEXT: # kill: def $edi killed $edi def $rdi
; X64-NEXT: leal (%rdi,%rsi), %eax
; X64-NEXT: addl $100, %eax
; X64-NEXT: addl %esi, %edi
; X64-NEXT: cmovnol %edi, %eax
; X64-NEXT: retq
;
; CMOV-LABEL: sadd_add_imm:
; CMOV: # %bb.0:
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CMOV-NEXT: leal (%eax,%ecx), %edx
; CMOV-NEXT: addl $100, %edx
; CMOV-NEXT: addl %ecx, %eax
; CMOV-NEXT: cmovol %edx, %eax
; CMOV-NEXT: retl
;
; NOCMOV-LABEL: sadd_add_imm:
; NOCMOV: # %bb.0:
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %edx
; NOCMOV-NEXT: leal (%eax,%edx), %ecx
; NOCMOV-NEXT: addl %edx, %eax
; NOCMOV-NEXT: jno .LBB0_2
; NOCMOV-NEXT: # %bb.1:
; NOCMOV-NEXT: addl $100, %ecx
; NOCMOV-NEXT: movl %ecx, %eax
; NOCMOV-NEXT: .LBB0_2:
; NOCMOV-NEXT: retl
%o = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %x, i32 %y)
%v1 = extractvalue { i32, i1 } %o, 1
%v2 = extractvalue { i32, i1 } %o, 0
%a = add i32 %v2, 100
%r = select i1 %v1, i32 %a, i32 %v2
ret i32 %r
}

define i32 @uadd_add_imm(i32 %x, i32 %y) {
; X64-LABEL: uadd_add_imm:
; X64: # %bb.0:
; X64-NEXT: # kill: def $esi killed $esi def $rsi
; X64-NEXT: # kill: def $edi killed $edi def $rdi
; X64-NEXT: leal (%rdi,%rsi), %eax
; X64-NEXT: addl $100, %eax
; X64-NEXT: addl %esi, %edi
; X64-NEXT: cmovael %edi, %eax
; X64-NEXT: retq
;
; CMOV-LABEL: uadd_add_imm:
; CMOV: # %bb.0:
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CMOV-NEXT: leal (%eax,%ecx), %edx
; CMOV-NEXT: addl $100, %edx
; CMOV-NEXT: addl %ecx, %eax
; CMOV-NEXT: cmovbl %edx, %eax
; CMOV-NEXT: retl
;
; NOCMOV-LABEL: uadd_add_imm:
; NOCMOV: # %bb.0:
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %edx
; NOCMOV-NEXT: leal (%eax,%edx), %ecx
; NOCMOV-NEXT: addl %edx, %eax
; NOCMOV-NEXT: jae .LBB1_2
; NOCMOV-NEXT: # %bb.1:
; NOCMOV-NEXT: addl $100, %ecx
; NOCMOV-NEXT: movl %ecx, %eax
; NOCMOV-NEXT: .LBB1_2:
; NOCMOV-NEXT: retl
%o = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %x, i32 %y)
%v1 = extractvalue { i32, i1 } %o, 1
%v2 = extractvalue { i32, i1 } %o, 0
%a = add i32 %v2, 100
%r = select i1 %v1, i32 %a, i32 %v2
ret i32 %r
}

define i32 @ssub_add_imm(i32 %x, i32 %y) {
; X64-LABEL: ssub_add_imm:
; X64: # %bb.0:
; X64-NEXT: movl %edi, %eax
; X64-NEXT: subl %esi, %eax
; X64-NEXT: addl $100, %eax
; X64-NEXT: subl %esi, %edi
; X64-NEXT: cmovnol %edi, %eax
; X64-NEXT: retq
;
; CMOV-LABEL: ssub_add_imm:
; CMOV: # %bb.0:
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CMOV-NEXT: movl %eax, %edx
; CMOV-NEXT: subl %ecx, %edx
; CMOV-NEXT: addl $100, %edx
; CMOV-NEXT: subl %ecx, %eax
; CMOV-NEXT: cmovol %edx, %eax
; CMOV-NEXT: retl
;
; NOCMOV-LABEL: ssub_add_imm:
; NOCMOV: # %bb.0:
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %edx
; NOCMOV-NEXT: movl %eax, %ecx
; NOCMOV-NEXT: subl %edx, %ecx
; NOCMOV-NEXT: subl %edx, %eax
; NOCMOV-NEXT: jno .LBB2_2
; NOCMOV-NEXT: # %bb.1:
; NOCMOV-NEXT: addl $100, %ecx
; NOCMOV-NEXT: movl %ecx, %eax
; NOCMOV-NEXT: .LBB2_2:
; NOCMOV-NEXT: retl
%o = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %x, i32 %y)
%v1 = extractvalue { i32, i1 } %o, 1
%v2 = extractvalue { i32, i1 } %o, 0
%a = add i32 %v2, 100
%r = select i1 %v1, i32 %a, i32 %v2
ret i32 %r
}

define i32 @usub_add_imm(i32 %x, i32 %y) {
; X64-LABEL: usub_add_imm:
; X64: # %bb.0:
; X64-NEXT: movl %edi, %eax
; X64-NEXT: subl %esi, %eax
; X64-NEXT: addl $100, %eax
; X64-NEXT: subl %esi, %edi
; X64-NEXT: cmovael %edi, %eax
; X64-NEXT: retq
;
; CMOV-LABEL: usub_add_imm:
; CMOV: # %bb.0:
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; CMOV-NEXT: movl {{[0-9]+}}(%esp), %ecx
; CMOV-NEXT: movl %eax, %edx
; CMOV-NEXT: subl %ecx, %edx
; CMOV-NEXT: addl $100, %edx
; CMOV-NEXT: subl %ecx, %eax
; CMOV-NEXT: cmovbl %edx, %eax
; CMOV-NEXT: retl
;
; NOCMOV-LABEL: usub_add_imm:
; NOCMOV: # %bb.0:
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %eax
; NOCMOV-NEXT: movl {{[0-9]+}}(%esp), %edx
; NOCMOV-NEXT: movl %eax, %ecx
; NOCMOV-NEXT: subl %edx, %ecx
; NOCMOV-NEXT: subl %edx, %eax
; NOCMOV-NEXT: jae .LBB3_2
; NOCMOV-NEXT: # %bb.1:
; NOCMOV-NEXT: addl $100, %ecx
; NOCMOV-NEXT: movl %ecx, %eax
; NOCMOV-NEXT: .LBB3_2:
; NOCMOV-NEXT: retl
%o = tail call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %x, i32 %y)
%v1 = extractvalue { i32, i1 } %o, 1
%v2 = extractvalue { i32, i1 } %o, 0
%a = add i32 %v2, 100
%r = select i1 %v1, i32 %a, i32 %v2
ret i32 %r
}

declare { i32, i1 } @llvm.sadd.with.overflow.i32(i32, i32)
declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32)
declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32)
declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32)

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