[AIX] Implement LR prolog/epilog save/restore

hubert-reinterpretcast · hubert-reinterpretcast · commit 8f1db0cd08d0 · 2019-08-13T13:38:24.000Z
Summary: This patch fixes the offsets of fields in the stack frame linkage save area for AIX. Reviewers: sfertile, hubert.reinterpretcast, jasonliu, Xiangling_L, xingxue, ZarkoCA, daltenty Reviewed By: hubert.reinterpretcast Subscribers: wuzish, nemanjai, hiraditya, kbarton, MaskRay, jsji, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D64424 Patch by Chris Bowler! llvm-svn: 368691
diff --git a/llvm/test/CodeGen/PowerPC/aix-lr.ll b/llvm/test/CodeGen/PowerPC/aix-lr.ll
@@ -0,0 +1,32 @@
+; RUN: llc -verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff < %s | \
+; RUN: FileCheck --check-prefix=32BIT %s
+
+; RUN: llc -verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff < %s | \
+; RUN: FileCheck --check-prefix=64BIT %s
+
+define void @bar() {
+entry:
+
+; 32BIT: mflr 0
+; 32BIT: stw 0, 8(1)
+; 32BIT: stwu 1, -64(1)
+; 32BIT: bl .foo
+; 32BIT: nop
+; 32BIT: addi 1, 1, 64
+; 32BIT: lwz 0, 8(1)
+; 32BIT: mtlr 0
+
+; 64BIT: mflr 0
+; 64BIT: std 0, 16(1)
+; 64BIT: stdu 1, -112(1)
+; 64BIT: bl .foo
+; 64BIT: nop
+; 64BIT: addi 1, 1, 112
+; 64BIT: ld 0, 16(1)
+; 64BIT: mtlr 0
+
+  call void bitcast (void (...)* @foo to void ()*)()
+  ret void
+}
+
+declare void @foo(...)
