[llvm] r310802 - [X86][BMI] Add BEXTR demanded bits test cases (PR34042)

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Sun Aug 13 13:35:38 2017
New Revision: 310802

URL: http://llvm.org/viewvc/llvm-project?rev=310802&view=rev
Log:
[X86][BMI] Add BEXTR demanded bits test cases (PR34042)

Modified:
    llvm/trunk/test/CodeGen/X86/bmi.ll

Modified: llvm/trunk/test/CodeGen/X86/bmi.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/bmi.ll?rev=310802&r1=310801&r2=310802&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/bmi.ll (original)
+++ llvm/trunk/test/CodeGen/X86/bmi.ll Sun Aug 13 13:35:38 2017
@@ -323,6 +323,18 @@ define i32 @bextr32b_load(i32* %x)  uwta
   ret i32 %3
 }
 
+; PR34042
+define i32 @bextr32c(i32 %x, i16 zeroext %y) {
+; CHECK-LABEL: bextr32c:
+; CHECK:       # BB#0:
+; CHECK-NEXT:    movswl %si, %eax
+; CHECK-NEXT:    bextrl %eax, %edi, %eax
+; CHECK-NEXT:    retq
+  %tmp0 = sext i16 %y to i32
+  %tmp1 = tail call i32 @llvm.x86.bmi.bextr.32(i32 %x, i32 %tmp0)
+  ret i32 %tmp1
+}
+
 define i64 @bextr64(i64 %x, i64 %y)   {
 ; CHECK-LABEL: bextr64:
 ; CHECK:       # BB#0:
@@ -357,6 +369,18 @@ define i64 @bextr64b_load(i64* %x) {
   ret i64 %3
 }
 
+; PR34042
+define i64 @bextr64c(i64 %x, i32 %y) {
+; CHECK-LABEL: bextr64c:
+; CHECK:       # BB#0:
+; CHECK-NEXT:    movslq %esi, %rax
+; CHECK-NEXT:    bextrq %rax, %rdi, %rax
+; CHECK-NEXT:    retq
+  %tmp0 = sext i32 %y to i64
+  %tmp1 = tail call i64 @llvm.x86.bmi.bextr.64(i64 %x, i64 %tmp0)
+  ret i64 %tmp1
+}
+
 define i32 @non_bextr32(i32 %x) {
 ; CHECK-LABEL: non_bextr32:
 ; CHECK:       # BB#0: # %entry