1 files changed, 187 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/frame-04.ll b/test/CodeGen/SystemZ/frame-04.ll
new file mode 100644
index 0000000..360f85c
--- /dev/null
+++ b/test/CodeGen/SystemZ/frame-04.ll
@@ -0,0 +1,187 @@
+; Like frame-02.ll, but with long doubles rather than floats.  Some of the
+; cases are slightly different because we need to allocate pairs of FPRs.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; This function should require all FPRs, but no other spill slots.
+; We need to save and restore 8 of the 16 FPRs, so the frame size
+; should be exactly 160 + 8 * 8 = 224.  The CFA offset is 160
+; (the caller-allocated part of the frame) + 224.
+define void @f1(fp128 *%ptr) {
+; CHECK: f1:
+; CHECK: aghi %r15, -224
+; CHECK: .cfi_def_cfa_offset 384
+; CHECK: std %f8, 216(%r15)
+; CHECK: std %f9, 208(%r15)
+; CHECK: std %f10, 200(%r15)
+; CHECK: std %f11, 192(%r15)
+; CHECK: std %f12, 184(%r15)
+; CHECK: std %f13, 176(%r15)
+; CHECK: std %f14, 168(%r15)
+; CHECK: std %f15, 160(%r15)
+; CHECK: .cfi_offset %f8, -168
+; CHECK: .cfi_offset %f9, -176
+; CHECK: .cfi_offset %f10, -184
+; CHECK: .cfi_offset %f11, -192
+; CHECK: .cfi_offset %f12, -200
+; CHECK: .cfi_offset %f13, -208
+; CHECK: .cfi_offset %f14, -216
+; CHECK: .cfi_offset %f15, -224
+; ...main function body...
+; CHECK: ld %f8, 216(%r15)
+; CHECK: ld %f9, 208(%r15)
+; CHECK: ld %f10, 200(%r15)
+; CHECK: ld %f11, 192(%r15)
+; CHECK: ld %f12, 184(%r15)
+; CHECK: ld %f13, 176(%r15)
+; CHECK: ld %f14, 168(%r15)
+; CHECK: ld %f15, 160(%r15)
+; CHECK: aghi %r15, 224
+; CHECK: br %r14
+  %l0 = load volatile fp128 *%ptr
+  %l1 = load volatile fp128 *%ptr
+  %l4 = load volatile fp128 *%ptr
+  %l5 = load volatile fp128 *%ptr
+  %l8 = load volatile fp128 *%ptr
+  %l9 = load volatile fp128 *%ptr
+  %l12 = load volatile fp128 *%ptr
+  %l13 = load volatile fp128 *%ptr
+  %add0 = fadd fp128 %l0, %l0
+  %add1 = fadd fp128 %l1, %add0
+  %add4 = fadd fp128 %l4, %add1
+  %add5 = fadd fp128 %l5, %add4
+  %add8 = fadd fp128 %l8, %add5
+  %add9 = fadd fp128 %l9, %add8
+  %add12 = fadd fp128 %l12, %add9
+  %add13 = fadd fp128 %l13, %add12
+  store volatile fp128 %add0, fp128 *%ptr
+  store volatile fp128 %add1, fp128 *%ptr
+  store volatile fp128 %add4, fp128 *%ptr
+  store volatile fp128 %add5, fp128 *%ptr
+  store volatile fp128 %add8, fp128 *%ptr
+  store volatile fp128 %add9, fp128 *%ptr
+  store volatile fp128 %add12, fp128 *%ptr
+  store volatile fp128 %add13, fp128 *%ptr
+  ret void
+}
+
+; Like f1, but requires one fewer FPR pair.  We allocate in numerical order,
+; so %f13+%f15 is the pair that gets dropped.
+define void @f2(fp128 *%ptr) {
+; CHECK: f2:
+; CHECK: aghi %r15, -208
+; CHECK: .cfi_def_cfa_offset 368
+; CHECK: std %f8, 200(%r15)
+; CHECK: std %f9, 192(%r15)
+; CHECK: std %f10, 184(%r15)
+; CHECK: std %f11, 176(%r15)
+; CHECK: std %f12, 168(%r15)
+; CHECK: std %f14, 160(%r15)
+; CHECK: .cfi_offset %f8, -168
+; CHECK: .cfi_offset %f9, -176
+; CHECK: .cfi_offset %f10, -184
+; CHECK: .cfi_offset %f11, -192
+; CHECK: .cfi_offset %f12, -200
+; CHECK: .cfi_offset %f14, -208
+; CHECK-NOT: %f13
+; CHECK-NOT: %f15
+; ...main function body...
+; CHECK: ld %f8, 200(%r15)
+; CHECK: ld %f9, 192(%r15)
+; CHECK: ld %f10, 184(%r15)
+; CHECK: ld %f11, 176(%r15)
+; CHECK: ld %f12, 168(%r15)
+; CHECK: ld %f14, 160(%r15)
+; CHECK: aghi %r15, 208
+; CHECK: br %r14
+  %l0 = load volatile fp128 *%ptr
+  %l1 = load volatile fp128 *%ptr
+  %l4 = load volatile fp128 *%ptr
+  %l5 = load volatile fp128 *%ptr
+  %l8 = load volatile fp128 *%ptr
+  %l9 = load volatile fp128 *%ptr
+  %l12 = load volatile fp128 *%ptr
+  %add0 = fadd fp128 %l0, %l0
+  %add1 = fadd fp128 %l1, %add0
+  %add4 = fadd fp128 %l4, %add1
+  %add5 = fadd fp128 %l5, %add4
+  %add8 = fadd fp128 %l8, %add5
+  %add9 = fadd fp128 %l9, %add8
+  %add12 = fadd fp128 %l12, %add9
+  store volatile fp128 %add0, fp128 *%ptr
+  store volatile fp128 %add1, fp128 *%ptr
+  store volatile fp128 %add4, fp128 *%ptr
+  store volatile fp128 %add5, fp128 *%ptr
+  store volatile fp128 %add8, fp128 *%ptr
+  store volatile fp128 %add9, fp128 *%ptr
+  store volatile fp128 %add12, fp128 *%ptr
+  ret void
+}
+
+; Like f1, but requires only one call-saved FPR pair.  We allocate in
+; numerical order so the pair should be %f8+%f10.
+define void @f3(fp128 *%ptr) {
+; CHECK: f3:
+; CHECK: aghi %r15, -176
+; CHECK: .cfi_def_cfa_offset 336
+; CHECK: std %f8, 168(%r15)
+; CHECK: std %f10, 160(%r15)
+; CHECK: .cfi_offset %f8, -168
+; CHECK: .cfi_offset %f10, -176
+; CHECK-NOT: %f9
+; CHECK-NOT: %f11
+; CHECK-NOT: %f12
+; CHECK-NOT: %f13
+; CHECK-NOT: %f14
+; CHECK-NOT: %f15
+; ...main function body...
+; CHECK: ld %f8, 168(%r15)
+; CHECK: ld %f10, 160(%r15)
+; CHECK: aghi %r15, 176
+; CHECK: br %r14
+  %l0 = load volatile fp128 *%ptr
+  %l1 = load volatile fp128 *%ptr
+  %l4 = load volatile fp128 *%ptr
+  %l5 = load volatile fp128 *%ptr
+  %l8 = load volatile fp128 *%ptr
+  %add0 = fadd fp128 %l0, %l0
+  %add1 = fadd fp128 %l1, %add0
+  %add4 = fadd fp128 %l4, %add1
+  %add5 = fadd fp128 %l5, %add4
+  %add8 = fadd fp128 %l8, %add5
+  store volatile fp128 %add0, fp128 *%ptr
+  store volatile fp128 %add1, fp128 *%ptr
+  store volatile fp128 %add4, fp128 *%ptr
+  store volatile fp128 %add5, fp128 *%ptr
+  store volatile fp128 %add8, fp128 *%ptr
+  ret void
+}
+
+; This function should use all call-clobbered FPRs but no call-saved ones.
+; It shouldn't need to create a frame.
+define void @f4(fp128 *%ptr) {
+; CHECK: f4:
+; CHECK-NOT: %r15
+; CHECK-NOT: %f8
+; CHECK-NOT: %f9
+; CHECK-NOT: %f10
+; CHECK-NOT: %f11
+; CHECK-NOT: %f12
+; CHECK-NOT: %f13
+; CHECK-NOT: %f14
+; CHECK-NOT: %f15
+; CHECK: br %r14
+  %l0 = load volatile fp128 *%ptr
+  %l1 = load volatile fp128 *%ptr
+  %l4 = load volatile fp128 *%ptr
+  %l5 = load volatile fp128 *%ptr
+  %add0 = fadd fp128 %l0, %l0
+  %add1 = fadd fp128 %l1, %add0
+  %add4 = fadd fp128 %l4, %add1
+  %add5 = fadd fp128 %l5, %add4
+  store volatile fp128 %add0, fp128 *%ptr
+  store volatile fp128 %add1, fp128 *%ptr
+  store volatile fp128 %add4, fp128 *%ptr
+  store volatile fp128 %add5, fp128 *%ptr
+  ret void
+}