From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Fri, 8 Feb 2019 16:51:16 +0000 (+0000)
Subject: [X86] Add basic funnel shift demanded bits tests
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=02fc2083cc5f6dcdf8172cb396cdd6eb7b330586;p=llvm

[X86] Add basic funnel shift demanded bits tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353534 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/CodeGen/X86/funnel-shift.ll b/test/CodeGen/X86/funnel-shift.ll
index 0969d6d190c..ab6acabded9 100644
--- a/test/CodeGen/X86/funnel-shift.ll
+++ b/test/CodeGen/X86/funnel-shift.ll
@@ -318,6 +318,54 @@ define i7 @fshr_i7_const_fold() nounwind {
   ret i7 %f
 }
 
+; demanded bits tests
+
+define i32 @fshl_i32_demandedbits(i32 %a0, i32 %a1) nounwind {
+; X32-SSE2-LABEL: fshl_i32_demandedbits:
+; X32-SSE2:       # %bb.0:
+; X32-SSE2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-SSE2-NEXT:    movl $-2147483648, %ecx # imm = 0x80000000
+; X32-SSE2-NEXT:    orl {{[0-9]+}}(%esp), %ecx
+; X32-SSE2-NEXT:    orl $1, %eax
+; X32-SSE2-NEXT:    shrdl $23, %ecx, %eax
+; X32-SSE2-NEXT:    retl
+;
+; X64-AVX2-LABEL: fshl_i32_demandedbits:
+; X64-AVX2:       # %bb.0:
+; X64-AVX2-NEXT:    movl %esi, %eax
+; X64-AVX2-NEXT:    orl $-2147483648, %edi # imm = 0x80000000
+; X64-AVX2-NEXT:    orl $1, %eax
+; X64-AVX2-NEXT:    shrdl $23, %edi, %eax
+; X64-AVX2-NEXT:    retq
+  %x = or i32 %a0, 2147483648
+  %y = or i32 %a1, 1
+  %res = call i32 @llvm.fshl.i32(i32 %x, i32 %y, i32 9)
+  ret i32 %res
+}
+
+define i32 @fshr_i32_demandedbits(i32 %a0, i32 %a1) nounwind {
+; X32-SSE2-LABEL: fshr_i32_demandedbits:
+; X32-SSE2:       # %bb.0:
+; X32-SSE2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-SSE2-NEXT:    movl $-2147483648, %ecx # imm = 0x80000000
+; X32-SSE2-NEXT:    orl {{[0-9]+}}(%esp), %ecx
+; X32-SSE2-NEXT:    orl $1, %eax
+; X32-SSE2-NEXT:    shrdl $9, %ecx, %eax
+; X32-SSE2-NEXT:    retl
+;
+; X64-AVX2-LABEL: fshr_i32_demandedbits:
+; X64-AVX2:       # %bb.0:
+; X64-AVX2-NEXT:    movl %esi, %eax
+; X64-AVX2-NEXT:    orl $-2147483648, %edi # imm = 0x80000000
+; X64-AVX2-NEXT:    orl $1, %eax
+; X64-AVX2-NEXT:    shrdl $9, %edi, %eax
+; X64-AVX2-NEXT:    retq
+  %x = or i32 %a0, 2147483648
+  %y = or i32 %a1, 1
+  %res = call i32 @llvm.fshr.i32(i32 %x, i32 %y, i32 9)
+  ret i32 %res
+}
+
 ; With constant shift amount, this is 'shrd' or 'shld'.
 
 define i32 @fshr_i32_const_shift(i32 %x, i32 %y) nounwind {