[X86] Updated scalar integer absolute tests to cover i8/i16/i32/i64

llvm-svn: 315706

llvm/test/CodeGen/X86/iabs.ll

@@ -1,4 +1,6 @@
-; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64
 
 ;; Integer absolute value, should produce something at least as good as:
 ;;       movl   %edi, %eax
@@ -6,15 +8,97 @@
 ;;       cmovll %edi, %eax
 ;;       ret
 ; rdar://10695237
-define i32 @test(i32 %a) nounwind {
-; CHECK-LABEL: test:
-; CHECK: mov
-; CHECK-NEXT: neg
-; CHECK-NEXT: cmov
-; CHECK-NEXT: ret
-        %tmp1neg = sub i32 0, %a
-        %b = icmp sgt i32 %a, -1
-        %abs = select i1 %b, i32 %a, i32 %tmp1neg
-        ret i32 %abs
+define i8 @test_i8(i8 %a) nounwind {
+; X86-LABEL: test_i8:
+; X86:       # BB#0:
+; X86-NEXT:    movb {{[0-9]+}}(%esp), %al
+; X86-NEXT:    movl %eax, %ecx
+; X86-NEXT:    sarb $7, %cl
+; X86-NEXT:    addb %cl, %al
+; X86-NEXT:    xorb %cl, %al
+; X86-NEXT:    retl
+;
+; X64-LABEL: test_i8:
+; X64:       # BB#0:
+; X64-NEXT:    movl %edi, %eax
+; X64-NEXT:    sarb $7, %al
+; X64-NEXT:    addb %al, %dil
+; X64-NEXT:    xorb %al, %dil
+; X64-NEXT:    movl %edi, %eax
+; X64-NEXT:    retq
+  %tmp1neg = sub i8 0, %a
+  %b = icmp sgt i8 %a, -1
+  %abs = select i1 %b, i8 %a, i8 %tmp1neg
+  ret i8 %abs
+}
+
+define i16 @test_i16(i16 %a) nounwind {
+; X86-LABEL: test_i16:
+; X86:       # BB#0:
+; X86-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl %eax, %ecx
+; X86-NEXT:    sarw $15, %cx
+; X86-NEXT:    addl %ecx, %eax
+; X86-NEXT:    xorl %ecx, %eax
+; X86-NEXT:    # kill: %AX<def> %AX<kill> %EAX<kill>
+; X86-NEXT:    retl
+;
+; X64-LABEL: test_i16:
+; X64:       # BB#0:
+; X64-NEXT:    movl %edi, %eax
+; X64-NEXT:    negw %ax
+; X64-NEXT:    cmovlw %di, %ax
+; X64-NEXT:    retq
+  %tmp1neg = sub i16 0, %a
+  %b = icmp sgt i16 %a, -1
+  %abs = select i1 %b, i16 %a, i16 %tmp1neg
+  ret i16 %abs
+}
+
+define i32 @test_i32(i32 %a) nounwind {
+; X86-LABEL: test_i32:
+; X86:       # BB#0:
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl %eax, %ecx
+; X86-NEXT:    sarl $31, %ecx
+; X86-NEXT:    addl %ecx, %eax
+; X86-NEXT:    xorl %ecx, %eax
+; X86-NEXT:    retl
+;
+; X64-LABEL: test_i32:
+; X64:       # BB#0:
+; X64-NEXT:    movl %edi, %eax
+; X64-NEXT:    negl %eax
+; X64-NEXT:    cmovll %edi, %eax
+; X64-NEXT:    retq
+  %tmp1neg = sub i32 0, %a
+  %b = icmp sgt i32 %a, -1
+  %abs = select i1 %b, i32 %a, i32 %tmp1neg
+  ret i32 %abs
+}
+
+define i64 @test_i64(i64 %a) nounwind {
+; X86-LABEL: test_i64:
+; X86:       # BB#0:
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NEXT:    movl %edx, %ecx
+; X86-NEXT:    sarl $31, %ecx
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    addl %ecx, %eax
+; X86-NEXT:    adcl %ecx, %edx
+; X86-NEXT:    xorl %ecx, %edx
+; X86-NEXT:    xorl %ecx, %eax
+; X86-NEXT:    retl
+;
+; X64-LABEL: test_i64:
+; X64:       # BB#0:
+; X64-NEXT:    movq %rdi, %rax
+; X64-NEXT:    negq %rax
+; X64-NEXT:    cmovlq %rdi, %rax
+; X64-NEXT:    retq
+  %tmp1neg = sub i64 0, %a
+  %b = icmp sgt i64 %a, -1
+  %abs = select i1 %b, i64 %a, i64 %tmp1neg
+  ret i64 %abs
 }