Lower the MBlaze target specific calling conventions for "interrupt_handler"

and "save_volatiles" correctly. This completes the custom calling convention
functionality changes for the MBlaze backend that were started in 121888.

llvm-svn: 121891

2 files changed, 128 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/MBlaze/intr.ll b/llvm/test/CodeGen/MBlaze/intr.ll
new file mode 100644
index 00000000000..79c6bffd00c
--- /dev/null
+++ b/llvm/test/CodeGen/MBlaze/intr.ll
@@ -0,0 +1,48 @@
+; Ensure that the MBlaze interrupt_handler calling convention (cc73) is handled
+; correctly correctly by the MBlaze backend.
+;
+; RUN: llc < %s -march=mblaze | FileCheck %s
+
+@.str = private constant [28 x i8] c"The interrupt has gone off\0A\00"
+@_interrupt_handler = alias void ()* @myintr
+
+define cc73 void @myintr() nounwind noinline {
+  ; CHECK:        myintr:
+  ; CHECK:        swi   r3, r1
+  ; CHECK:        swi   r4, r1
+  ; CHECK:        swi   r5, r1
+  ; CHECK:        swi   r6, r1
+  ; CHECK:        swi   r7, r1
+  ; CHECK:        swi   r8, r1
+  ; CHECK:        swi   r9, r1
+  ; CHECK:        swi   r10, r1
+  ; CHECK:        swi   r11, r1
+  ; CHECK:        swi   r12, r1
+  ; CHECK:        swi   r17, r1
+  ; CHECK:        swi   r18, r1
+  ; CHECK:        mfs   r11, rmsr
+  ; CHECK:        swi   r11, r1
+  entry:
+    %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([28 x i8]* @.str, i32 0, i32 0))
+      ret void
+
+  ; CHECK:        lwi   r11, r1
+  ; CHECK:        mts   rmsr, r11
+  ; CHECK:        lwi   r18, r1
+  ; CHECK:        lwi   r17, r1
+  ; CHECK:        lwi   r12, r1
+  ; CHECK:        lwi   r11, r1
+  ; CHECK:        lwi   r10, r1
+  ; CHECK:        lwi   r9, r1
+  ; CHECK:        lwi   r8, r1
+  ; CHECK:        lwi   r7, r1
+  ; CHECK:        lwi   r6, r1
+  ; CHECK:        lwi   r5, r1
+  ; CHECK:        lwi   r4, r1
+  ; CHECK:        lwi   r3, r1
+  ; CHECK:        rtid  r14, 0
+}
+
+  ; CHECK:    .globl  _interrupt_handler
+  ; CHECK:    _interrupt_handler = myintr
+declare i32 @printf(i8*, ...)
diff --git a/llvm/test/CodeGen/MBlaze/svol.ll b/llvm/test/CodeGen/MBlaze/svol.ll
new file mode 100644
index 00000000000..c1e96202845
--- /dev/null
+++ b/llvm/test/CodeGen/MBlaze/svol.ll
@@ -0,0 +1,80 @@
+; Ensure that the MBlaze save_volatiles calling convention (cc74) is handled
+; correctly correctly by the MBlaze backend.
+;
+; RUN: llc < %s -march=mblaze | FileCheck %s
+
+@.str = private constant [28 x i8] c"The interrupt has gone off\0A\00"
+
+define cc74 void @mysvol() nounwind noinline {
+  ; CHECK:        mysvol:
+  ; CHECK:        swi   r3, r1
+  ; CHECK:        swi   r4, r1
+  ; CHECK:        swi   r5, r1
+  ; CHECK:        swi   r6, r1
+  ; CHECK:        swi   r7, r1
+  ; CHECK:        swi   r8, r1
+  ; CHECK:        swi   r9, r1
+  ; CHECK:        swi   r10, r1
+  ; CHECK:        swi   r11, r1
+  ; CHECK:        swi   r12, r1
+  ; CHECK:        swi   r17, r1
+  ; CHECK:        swi   r18, r1
+  ; CHECK-NOT:    mfs   r11, rmsr
+  entry:
+    %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([28 x i8]* @.str, i32 0, i32 0))
+      ret void
+
+  ; CHECK-NOT:    mts   rmsr, r11
+  ; CHECK:        lwi   r18, r1
+  ; CHECK:        lwi   r17, r1
+  ; CHECK:        lwi   r12, r1
+  ; CHECK:        lwi   r11, r1
+  ; CHECK:        lwi   r10, r1
+  ; CHECK:        lwi   r9, r1
+  ; CHECK:        lwi   r8, r1
+  ; CHECK:        lwi   r7, r1
+  ; CHECK:        lwi   r6, r1
+  ; CHECK:        lwi   r5, r1
+  ; CHECK:        lwi   r4, r1
+  ; CHECK:        lwi   r3, r1
+  ; CHECK:        rtsd  r15, 8
+}
+
+define cc74 void @mysvol2() nounwind noinline {
+  ; CHECK:        mysvol2:
+  ; CHECK-NOT:    swi   r3, r1
+  ; CHECK-NOT:    swi   r4, r1
+  ; CHECK-NOT:    swi   r5, r1
+  ; CHECK-NOT:    swi   r6, r1
+  ; CHECK-NOT:    swi   r7, r1
+  ; CHECK-NOT:    swi   r8, r1
+  ; CHECK-NOT:    swi   r9, r1
+  ; CHECK-NOT:    swi   r10, r1
+  ; CHECK-NOT:    swi   r11, r1
+  ; CHECK-NOT:    swi   r12, r1
+  ; CHECK:        swi   r17, r1
+  ; CHECK:        swi   r18, r1
+  ; CHECK-NOT:    mfs   r11, rmsr
+entry:
+
+  ; CHECK-NOT:    mts   rmsr, r11
+  ; CHECK:        lwi   r18, r1
+  ; CHECK:        lwi   r17, r1
+  ; CHECK-NOT:    lwi   r12, r1
+  ; CHECK-NOT:    lwi   r11, r1
+  ; CHECK-NOT:    lwi   r10, r1
+  ; CHECK-NOT:    lwi   r9, r1
+  ; CHECK-NOT:    lwi   r8, r1
+  ; CHECK-NOT:    lwi   r7, r1
+  ; CHECK-NOT:    lwi   r6, r1
+  ; CHECK-NOT:    lwi   r5, r1
+  ; CHECK-NOT:    lwi   r4, r1
+  ; CHECK-NOT:    lwi   r3, r1
+  ; CHECK:        rtsd  r15, 8
+  ret void
+}
+
+  ; CHECK-NOT:    .globl  _interrupt_handler
+  ; CHECK-NOT:    _interrupt_handler = mysvol
+  ; CHECK-NOT:    _interrupt_handler = mysvol2
+declare i32 @printf(i8*, ...)