[x32] Fix function indirect calls
Summary: Zero-extend register to 64-bit for callq/jmpq.
Test Plan: 3 tests added
Reviewers: nadav, dschuff
Subscribers: llvm-commits, zinovy.nis
Differential Revision: http://reviews.llvm.org/D5355
llvm-svn: 217942
diff --git a/llvm/test/CodeGen/X86/x32-function_pointer-2.ll b/llvm/test/CodeGen/X86/x32-function_pointer-2.ll
new file mode 100644
index 0000000..f727d41
--- /dev/null
+++ b/llvm/test/CodeGen/X86/x32-function_pointer-2.ll
@@ -0,0 +1,21 @@
+; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-linux-gnux32 -fast-isel | FileCheck %s
+
+; Test call function pointer with function argument
+;
+; void bar (void * h, void (*foo) (void *))
+; {
+; foo (h);
+; foo (h);
+; }
+
+
+define void @bar(i8* %h, void (i8*)* nocapture %foo) nounwind {
+entry:
+ tail call void %foo(i8* %h) nounwind
+; CHECK: mov{{l|q}} %{{e|r}}si, %{{e|r}}[[REG:.*]]{{d?}}
+; CHECK: callq *%r[[REG]]
+ tail call void %foo(i8* %h) nounwind
+; CHECK: jmpq *%r{{[^,]*}}
+ ret void
+}