[X86] Add test case for PR15705

llvm-svn: 306246

1 files changed, 48 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/pr15705.ll b/llvm/test/CodeGen/X86/pr15705.ll
new file mode 100644
index 00000000000..e728bc8d34c
--- /dev/null
+++ b/llvm/test/CodeGen/X86/pr15705.ll
@@ -0,0 +1,48 @@
+; 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
+
+define i32 @PR15705(i32 %x, i32 %a, i32 %b, i32 %c) #0 {
+; X86-LABEL: PR15705:
+; X86:       # BB#0: # %entry
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; X86-NEXT:    cmpl %ecx, %edx
+; X86-NEXT:    je .LBB0_4
+; X86-NEXT:  # BB#1: # %if.end
+; X86-NEXT:    cmpl %eax, %edx
+; X86-NEXT:    jne .LBB0_3
+; X86-NEXT:  # BB#2:
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT:  .LBB0_3: # %if.end
+; X86-NEXT:    movl %ecx, %eax
+; X86-NEXT:  .LBB0_4: # %return
+; X86-NEXT:    retl
+;
+; X64-LABEL: PR15705:
+; X64:       # BB#0: # %entry
+; X64-NEXT:    cmpl %esi, %edi
+; X64-NEXT:    je .LBB0_2
+; X64-NEXT:  # BB#1: # %if.end
+; X64-NEXT:    cmpl %edx, %edi
+; X64-NEXT:    cmovel %ecx, %esi
+; X64-NEXT:    movl %esi, %edx
+; X64-NEXT:  .LBB0_2: # %return
+; X64-NEXT:    movl %edx, %eax
+; X64-NEXT:    retq
+entry:
+  %cmp = icmp eq i32 %x, %a
+  br i1 %cmp, label %return, label %if.end
+
+if.end:
+  %cmp1 = icmp eq i32 %x, %b
+  %c.a = select i1 %cmp1, i32 %c, i32 %a
+  br label %return
+
+return:
+  %retval.0 = phi i32 [ %b, %entry ], [ %c.a, %if.end ]
+  ret i32 %retval.0
+}
+
+attributes #0 = { nounwind readnone ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }