[X86] Add PR22338 test case

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297957 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/pr22338.ll b/test/CodeGen/X86/pr22338.ll
new file mode 100644 (file)
index 0000000..e0645d1
--- /dev/null
+++ b/test/CodeGen/X86/pr22338.ll
@@ -0,0 +1,57 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-unknown-linux-gnu | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s --check-prefix=X64
+
+define i32 @fn() {
+; X86-LABEL: fn:
+; X86:       # BB#0: # %entry
+; X86-NEXT:    cmpl $1, %eax
+; X86-NEXT:    sete %cl
+; X86-NEXT:    movl $-1, %eax
+; X86-NEXT:    jne .LBB0_2
+; X86-NEXT:  # BB#1: # %entry
+; X86-NEXT:    xorl %eax, %eax
+; X86-NEXT:  .LBB0_2: # %entry
+; X86-NEXT:    addb %cl, %cl
+; X86-NEXT:    shll %cl, %eax
+; X86-NEXT:    .p2align 4, 0x90
+; X86-NEXT:  .LBB0_3: # %bb1
+; X86-NEXT:    # =>This Inner Loop Header: Depth=1
+; X86-NEXT:    testl %eax, %eax
+; X86-NEXT:    je .LBB0_3
+; X86-NEXT:  # BB#4: # %bb2
+; X86-NEXT:    retl
+;
+; X64-LABEL: fn:
+; X64:       # BB#0: # %entry
+; X64-NEXT:    xorl %edx, %edx
+; X64-NEXT:    cmpl $1, %eax
+; X64-NEXT:    sete %cl
+; X64-NEXT:    movl $-1, %eax
+; X64-NEXT:    cmovel %edx, %eax
+; X64-NEXT:    addb %cl, %cl
+; X64-NEXT:    shll %cl, %eax
+; X64-NEXT:    .p2align 4, 0x90
+; X64-NEXT:  .LBB0_1: # %bb1
+; X64-NEXT:    # =>This Inner Loop Header: Depth=1
+; X64-NEXT:    testl %eax, %eax
+; X64-NEXT:    je .LBB0_1
+; X64-NEXT:  # BB#2: # %bb2
+; X64-NEXT:    retq
+entry:
+  %cmp1 = icmp ne i32 undef, 1
+  %cmp2 = icmp eq i32 undef, 1
+  %sel1 = select i1 %cmp1, i32 0, i32 2
+  %sel2 = select i1 %cmp2, i32 2, i32 0
+  %sext = sext i1 %cmp1 to i32
+  %shl1 = shl i32 %sext, %sel1
+  %shl2 = shl i32 %sext, %sel2
+  %tobool = icmp eq i32 %shl1, 0
+  br label %bb1
+
+bb1:                                              ; preds = %bb1, %entry
+  br i1 %tobool, label %bb1, label %bb2
+
+bb2:                                              ; preds = %bb1
+  ret i32 %shl2
+}