[llvm] r295496 - [X86] Add subborrow stack folding tests

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Fri Feb 17 15:16:24 2017
New Revision: 295496

URL: http://llvm.org/viewvc/llvm-project?rev=295496&view=rev
Log:
[X86] Add subborrow stack folding tests

Modified:
    llvm/trunk/test/CodeGen/X86/stack-folding-adx-x86_64.ll

Modified: llvm/trunk/test/CodeGen/X86/stack-folding-adx-x86_64.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/stack-folding-adx-x86_64.ll?rev=295496&r1=295495&r2=295496&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/stack-folding-adx-x86_64.ll (original)
+++ llvm/trunk/test/CodeGen/X86/stack-folding-adx-x86_64.ll Fri Feb 17 15:16:24 2017
@@ -43,3 +43,21 @@ define i8 @stack_fold_addcarryx_u64(i8 %
   ret i8 %2;
 }
 declare i8 @llvm.x86.addcarryx.u64(i8, i64, i64, i8*)
+
+define i8 @stack_fold_subborrow_u32(i8 %a0, i32 %a1, i32 %a2, i8* %a3) {
+  ;CHECK-LABEL: stack_fold_subborrow_u32
+  ;CHECK:       sbbl {{-?[0-9]*}}(%rsp), %ecx {{.*#+}} 4-byte Folded Reload
+  %1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
+  %2 = tail call i8 @llvm.x86.subborrow.u32(i8 %a0, i32 %a1, i32 %a2, i8* %a3)
+  ret i8 %2;
+}
+declare i8 @llvm.x86.subborrow.u32(i8, i32, i32, i8*)
+
+define i8 @stack_fold_subborrow_u64(i8 %a0, i64 %a1, i64 %a2, i8* %a3) {
+  ;CHECK-LABEL: stack_fold_subborrow_u64
+  ;CHECK:       sbbq {{-?[0-9]*}}(%rsp), %rcx {{.*#+}} 8-byte Folded Reload
+  %1 = tail call i64 asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
+  %2 = tail call i8 @llvm.x86.subborrow.u64(i8 %a0, i64 %a1, i64 %a2, i8* %a3)
+  ret i8 %2;
+}
+declare i8 @llvm.x86.subborrow.u64(i8, i64, i64, i8*)