[mips] Test case for r173862.

Patch by Sasa Stankovic.

llvm-svn: 173863

2 files changed, 164 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Mips/eh-return32.ll b/llvm/test/CodeGen/Mips/eh-return32.ll
new file mode 100644
index 00000000000..cf18fde5bdf
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/eh-return32.ll
@@ -0,0 +1,81 @@
+; RUN: llc -march=mipsel -mcpu=mips32 < %s | FileCheck %s
+
+declare void @llvm.eh.return.i32(i32, i8*)
+declare void @foo(...)
+
+define i8* @f1(i32 %offset, i8* %handler) {
+entry:
+  call void (...)* @foo()
+  call void @llvm.eh.return.i32(i32 %offset, i8* %handler)
+  unreachable
+
+; CHECK:        f1
+; CHECK:        addiu   $sp, $sp, -[[spoffset:[0-9]+]]
+
+; check that $a0-$a3 are saved on stack.
+; CHECK:        sw      $4, [[offset0:[0-9]+]]($sp)
+; CHECK:        sw      $5, [[offset1:[0-9]+]]($sp)
+; CHECK:        sw      $6, [[offset2:[0-9]+]]($sp)
+; CHECK:        sw      $7, [[offset3:[0-9]+]]($sp)
+
+; check that .cfi_offset directives are emitted for $a0-$a3.
+; CHECK:        .cfi_offset 4,
+; CHECK:        .cfi_offset 5,
+; CHECK:        .cfi_offset 6,
+; CHECK:        .cfi_offset 7,
+
+; check that stack adjustment and handler are put in $v1 and $v0.
+; CHECK:        or      $[[R0:[a-z0-9]+]], $5, $zero
+; CHECK:        or      $[[R1:[a-z0-9]+]], $4, $zero
+; CHECK:        or      $3, $[[R1]], $zero
+; CHECK:        or      $2, $[[R0]], $zero
+
+; check that $a0-$a3 are restored from stack.
+; CHECK:        lw      $4, [[offset0]]($sp)
+; CHECK:        lw      $5, [[offset1]]($sp)
+; CHECK:        lw      $6, [[offset2]]($sp)
+; CHECK:        lw      $7, [[offset3]]($sp)
+
+; check that stack is adjusted by $v1 and that code returns to address in $v0
+; CHECK:        addiu   $sp, $sp, [[spoffset]]
+; CHECK:        or      $ra, $2, $zero
+; CHECK:        jr      $ra
+; CHECK:        addu    $sp, $sp, $3
+}
+
+define i8* @f2(i32 %offset, i8* %handler) {
+entry:
+  call void @llvm.eh.return.i32(i32 %offset, i8* %handler)
+  unreachable
+
+; CHECK:        f2
+; CHECK:        addiu   $sp, $sp, -[[spoffset:[0-9]+]]
+
+; check that $a0-$a3 are saved on stack.
+; CHECK:        sw      $4, [[offset0:[0-9]+]]($sp)
+; CHECK:        sw      $5, [[offset1:[0-9]+]]($sp)
+; CHECK:        sw      $6, [[offset2:[0-9]+]]($sp)
+; CHECK:        sw      $7, [[offset3:[0-9]+]]($sp)
+
+; check that .cfi_offset directives are emitted for $a0-$a3.
+; CHECK:        .cfi_offset 4,
+; CHECK:        .cfi_offset 5,
+; CHECK:        .cfi_offset 6,
+; CHECK:        .cfi_offset 7,
+
+; check that stack adjustment and handler are put in $v1 and $v0.
+; CHECK:        or      $3, $4, $zero
+; CHECK:        or      $2, $5, $zero
+
+; check that $a0-$a3 are restored from stack.
+; CHECK:        lw      $4, [[offset0]]($sp)
+; CHECK:        lw      $5, [[offset1]]($sp)
+; CHECK:        lw      $6, [[offset2]]($sp)
+; CHECK:        lw      $7, [[offset3]]($sp)
+
+; check that stack is adjusted by $v1 and that code returns to address in $v0
+; CHECK:        addiu   $sp, $sp, [[spoffset]]
+; CHECK:        or      $ra, $2, $zero
+; CHECK:        jr      $ra
+; CHECK:        addu    $sp, $sp, $3
+}
diff --git a/llvm/test/CodeGen/Mips/eh-return64.ll b/llvm/test/CodeGen/Mips/eh-return64.ll
new file mode 100644
index 00000000000..c410e1c0ff7
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/eh-return64.ll
@@ -0,0 +1,83 @@
+; RUN: llc -march=mips64el -mcpu=mips64 < %s | FileCheck %s
+
+declare void @llvm.eh.return.i64(i64, i8*)
+declare void @foo(...)
+
+define void @f1(i64 %offset, i8* %handler) {
+entry:
+  call void (...)* @foo()
+  call void @llvm.eh.return.i64(i64 %offset, i8* %handler)
+  unreachable
+
+; CHECK:        f1
+; CHECK:        daddiu  $sp, $sp, -[[spoffset:[0-9]+]]
+
+; check that $a0-$a3 are saved on stack.
+; CHECK:        sd      $4, [[offset0:[0-9]+]]($sp)
+; CHECK:        sd      $5, [[offset1:[0-9]+]]($sp)
+; CHECK:        sd      $6, [[offset2:[0-9]+]]($sp)
+; CHECK:        sd      $7, [[offset3:[0-9]+]]($sp)
+
+; check that .cfi_offset directives are emitted for $a0-$a3.
+; CHECK:        .cfi_offset 4,
+; CHECK:        .cfi_offset 5,
+; CHECK:        .cfi_offset 6,
+; CHECK:        .cfi_offset 7,
+
+; check that stack adjustment and handler are put in $v1 and $v0.
+; CHECK:        or      $[[R0:[a-z0-9]+]], $5, $zero
+; CHECK:        or      $[[R1:[a-z0-9]+]], $4, $zero
+; CHECK:        or      $3, $[[R1]], $zero
+; CHECK:        or      $2, $[[R0]], $zero
+
+; check that $a0-$a3 are restored from stack.
+; CHECK:        ld      $4, [[offset0]]($sp)
+; CHECK:        ld      $5, [[offset1]]($sp)
+; CHECK:        ld      $6, [[offset2]]($sp)
+; CHECK:        ld      $7, [[offset3]]($sp)
+
+; check that stack is adjusted by $v1 and that code returns to address in $v0
+; CHECK:        daddiu  $sp, $sp, [[spoffset]]
+; CHECK:        or      $ra, $2, $zero
+; CHECK:        jr      $ra
+; CHECK:        daddu   $sp, $sp, $3
+
+}
+
+define void @f2(i64 %offset, i8* %handler) {
+entry:
+  call void @llvm.eh.return.i64(i64 %offset, i8* %handler)
+  unreachable
+
+; CHECK:        f2
+; CHECK:        daddiu  $sp, $sp, -[[spoffset:[0-9]+]]
+
+; check that $a0-$a3 are saved on stack.
+; CHECK:        sd      $4, [[offset0:[0-9]+]]($sp)
+; CHECK:        sd      $5, [[offset1:[0-9]+]]($sp)
+; CHECK:        sd      $6, [[offset2:[0-9]+]]($sp)
+; CHECK:        sd      $7, [[offset3:[0-9]+]]($sp)
+
+; check that .cfi_offset directives are emitted for $a0-$a3.
+; CHECK:        .cfi_offset 4,
+; CHECK:        .cfi_offset 5,
+; CHECK:        .cfi_offset 6,
+; CHECK:        .cfi_offset 7,
+
+; check that stack adjustment and handler are put in $v1 and $v0.
+; CHECK:        or      $3, $4, $zero
+; CHECK:        or      $2, $5, $zero
+
+; check that $a0-$a3 are restored from stack.
+; CHECK:        ld      $4, [[offset0]]($sp)
+; CHECK:        ld      $5, [[offset1]]($sp)
+; CHECK:        ld      $6, [[offset2]]($sp)
+; CHECK:        ld      $7, [[offset3]]($sp)
+
+; check that stack is adjusted by $v1 and that code returns to address in $v0
+; CHECK:        daddiu  $sp, $sp, [[spoffset]]
+; CHECK:        or      $ra, $2, $zero
+; CHECK:        jr      $ra
+; CHECK:        daddu   $sp, $sp, $3
+
+}