[llvm] r352480 - [X86] Add PR40483 test case

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Tue Jan 29 02:58:42 2019
New Revision: 352480

URL: http://llvm.org/viewvc/llvm-project?rev=352480&view=rev
Log:
[X86] Add PR40483 test case

Modified:
    llvm/trunk/test/CodeGen/X86/combine-sbb.ll

Modified: llvm/trunk/test/CodeGen/X86/combine-sbb.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/combine-sbb.ll?rev=352480&r1=352479&r2=352480&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/combine-sbb.ll (original)
+++ llvm/trunk/test/CodeGen/X86/combine-sbb.ll Tue Jan 29 02:58:42 2019
@@ -149,4 +149,61 @@ define i8 @PR24545(i32, i32, i32* nocapt
   %12 = zext i1 %11 to i8
   ret i8 %12
 }
+
+define i32 @PR40483_sub1(i32*, i32) nounwind {
+; X86-LABEL: PR40483_sub1:
+; X86:       # %bb.0:
+; X86-NEXT:    pushl %esi
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT:    movl (%ecx), %edx
+; X86-NEXT:    movl %edx, %esi
+; X86-NEXT:    subl %eax, %esi
+; X86-NEXT:    movl %esi, (%ecx)
+; X86-NEXT:    subl %edx, %eax
+; X86-NEXT:    addl %esi, %eax
+; X86-NEXT:    popl %esi
+; X86-NEXT:    retl
+;
+; X64-LABEL: PR40483_sub1:
+; X64:       # %bb.0:
+; X64-NEXT:    movl (%rdi), %ecx
+; X64-NEXT:    movl %ecx, %eax
+; X64-NEXT:    subl %esi, %eax
+; X64-NEXT:    movl %eax, (%rdi)
+; X64-NEXT:    subl %ecx, %esi
+; X64-NEXT:    addl %esi, %eax
+; X64-NEXT:    retq
+  %3 = load i32, i32* %0, align 4
+  %4 = tail call { i8, i32 } @llvm.x86.subborrow.32(i8 0, i32 %3, i32 %1)
+  %5 = extractvalue { i8, i32 } %4, 1
+  store i32 %5, i32* %0, align 4
+  %6 = sub i32 %1, %3
+  %7 = add i32 %6, %5
+  ret i32 %7
+}
+
+define i32 @PR40483_sub2(i32*, i32) nounwind {
+; X86-LABEL: PR40483_sub2:
+; X86:       # %bb.0:
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT:    subl %eax, (%ecx)
+; X86-NEXT:    xorl %eax, %eax
+; X86-NEXT:    retl
+;
+; X64-LABEL: PR40483_sub2:
+; X64:       # %bb.0:
+; X64-NEXT:    subl %esi, (%rdi)
+; X64-NEXT:    xorl %eax, %eax
+; X64-NEXT:    retq
+  %3 = load i32, i32* %0, align 4
+  %4 = sub i32 %3, %1
+  %5 = tail call { i8, i32 } @llvm.x86.subborrow.32(i8 0, i32 %3, i32 %1)
+  %6 = extractvalue { i8, i32 } %5, 1
+  store i32 %6, i32* %0, align 4
+  %7 = sub i32 %4, %6
+  ret i32 %7
+}
+
 declare { i8, i32 } @llvm.x86.subborrow.32(i8, i32, i32)