[X86] Added pointer math zext test case (PR22970)

llvm-svn: 301401

diff --git a/llvm/test/CodeGen/X86/pr22970.ll b/llvm/test/CodeGen/X86/pr22970.ll
new file mode 100644 (file)
index 0000000..38c0633
--- /dev/null
+++ b/llvm/test/CodeGen/X86/pr22970.ll
@@ -0,0 +1,47 @@
+; 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 @PR22970_i32(i32* nocapture readonly, i32) {
+; X86-LABEL: PR22970_i32:
+; X86:       # BB#0:
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl $4095, %ecx # imm = 0xFFF
+; X86-NEXT:    andl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT:    movl 32(%eax,%ecx,4), %eax
+; X86-NEXT:    retl
+;
+; X64-LABEL: PR22970_i32:
+; X64:       # BB#0:
+; X64-NEXT:    # kill: %ESI<def> %ESI<kill> %RSI<def>
+; X64-NEXT:    andl $4095, %esi # imm = 0xFFF
+; X64-NEXT:    movl 32(%rdi,%rsi,4), %eax
+; X64-NEXT:    retq
+  %3 = and i32 %1, 4095
+  %4 = add nuw nsw i32 %3, 8
+  %5 = zext i32 %4 to i64
+  %6 = getelementptr inbounds i32, i32* %0, i64 %5
+  %7 = load i32, i32* %6, align 4
+  ret i32 %7
+}
+
+define i32 @PR22970_i64(i32* nocapture readonly, i64) {
+; X86-LABEL: PR22970_i64:
+; X86:       # BB#0:
+; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT:    movl $4095, %ecx # imm = 0xFFF
+; X86-NEXT:    andl {{[0-9]+}}(%esp), %ecx
+; X86-NEXT:    movl 32(%eax,%ecx,4), %eax
+; X86-NEXT:    retl
+;
+; X64-LABEL: PR22970_i64:
+; X64:       # BB#0:
+; X64-NEXT:    andl $4095, %esi # imm = 0xFFF
+; X64-NEXT:    movl 32(%rdi,%rsi,4), %eax
+; X64-NEXT:    retq
+  %3 = and i64 %1, 4095
+  %4 = add nuw nsw i64 %3, 8
+  %5 = getelementptr inbounds i32, i32* %0, i64 %4
+  %6 = load i32, i32* %5, align 4
+  ret i32 %6
+}