[Sparc] Allow taking of function address into a register.

Modification of previously existing code (variable rename only), with unit test added.

Differential Revision: http://reviews.llvm.org/D19368

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268493 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 51 insertions, 0 deletions

diff --git a/test/CodeGen/SPARC/func-addr.ll b/test/CodeGen/SPARC/func-addr.ll
new file mode 100644
index 00000000000..3d1cd9c3069
--- /dev/null
+++ b/test/CodeGen/SPARC/func-addr.ll
@@ -0,0 +1,51 @@
+; RUN: llc < %s -march=sparc   -relocation-model=static -code-model=small  | FileCheck --check-prefix=abs32 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=small  | FileCheck --check-prefix=abs32 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=medium | FileCheck --check-prefix=abs44 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=large  | FileCheck --check-prefix=abs64 %s
+; RUN: llc < %s -march=sparc   -relocation-model=pic    -code-model=medium | FileCheck --check-prefix=v8pic32 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=pic    -code-model=medium | FileCheck --check-prefix=v9pic32 %s
+
+define void @func1() #0 {
+entry:
+  ret void
+}
+
+define void @test() #0 {
+entry:
+  %pFunc = alloca void (...)*, align 4
+  store void (...)* bitcast (void ()* @func1 to void (...)*), void (...)** %pFunc, align 4
+  %0 = load void (...)*, void (...)** %pFunc, align 4
+  %callee.knr.cast = bitcast void (...)* %0 to void ()*
+  call void %callee.knr.cast()
+
+; abs32-LABEL:   test
+; abs32:          sethi %hi(func1), %i0
+; abs32:          add %i0, %lo(func1), %i1
+; abs32:          call %i0+%lo(func1)
+
+; abs44-LABEL:   test
+; abs44:          sethi %h44(func1), %i0
+; abs44:          add %i0, %m44(func1), %i0
+; abs44:          sllx %i0, 12, %i0
+; abs44:          add %i0, %l44(func1), %i1
+; abs44:          call %i0+%l44(func1)
+
+; abs64-LABEL:   test
+; abs64:          sethi %hi(func1), %i0
+; abs64:          add %i0, %lo(func1), %i0
+; abs64:          sethi %hh(func1), %i1
+; abs64:          add %i1, %hm(func1), %i1
+
+; v8pic32-LABEL: test
+; v8pic32:        sethi %hi(func1), %i1
+; v8pic32:        add %i1, %lo(func1), %i1
+; v8pic32:        ld [%i0+%i1], %i0
+
+; v9pic32-LABEL: test
+; v9pic32:        sethi %hi(func1), %i1
+; v9pic32:        add %i1, %lo(func1), %i1
+; v9pic32:        ldx [%i0+%i1], %i0
+; v9pic32:        call %i0
+
+  ret void
+}