Merging r258471:

[oota-llvm.git] / test / CodeGen / AArch64 / tail-call.ll

diff --git a/test/CodeGen/AArch64/tail-call.ll b/test/CodeGen/AArch64/tail-call.ll
index eed6ae5f044cb8dafd8cb94b74770a8e2d6f9bc6..fa5d8b943b6b52ed035d70812bc9d8cc990e90ff 100644 (file)
--- a/test/CodeGen/AArch64/tail-call.ll
+++ b/test/CodeGen/AArch64/tail-call.ll
@@ -1,82 +1,85 @@
-; RUN: llc -verify-machineinstrs < %s -march=aarch64 -tailcallopt | FileCheck %s
+; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -tailcallopt | FileCheck %s
 
 declare fastcc void @callee_stack0()
 declare fastcc void @callee_stack8([8 x i32], i64)
 declare fastcc void @callee_stack16([8 x i32], i64, i64)
+declare extern_weak fastcc void @callee_weak()
 
 define fastcc void @caller_to0_from0() nounwind {
-; CHECK: caller_to0_from0:
+; CHECK-LABEL: caller_to0_from0:
 ; CHECK-NEXT: // BB
+
   tail call fastcc void @callee_stack0()
   ret void
+
 ; CHECK-NEXT: b callee_stack0
 }
 
 define fastcc void @caller_to0_from8([8 x i32], i64) {
-; CHECK: caller_to0_from8:
+; CHECK-LABEL: caller_to0_from8:
 
   tail call fastcc void @callee_stack0()
   ret void
+
 ; CHECK: add sp, sp, #16
 ; CHECK-NEXT: b callee_stack0
 }
 
 define fastcc void @caller_to8_from0() {
-; CHECK: caller_to8_from0:
+; CHECK-LABEL: caller_to8_from0:
 ; CHECK: sub sp, sp, #32
 
 ; Key point is that the "42" should go #16 below incoming stack
 ; pointer (we didn't have arg space to reuse).
   tail call fastcc void @callee_stack8([8 x i32] undef, i64 42)
   ret void
-; CHECK: str {{x[0-9]+}}, [sp, #16]
-; CHECK-NEXT: add sp, sp, #16
+
+; CHECK: str {{x[0-9]+}}, [sp, #16]!
 ; CHECK-NEXT: b callee_stack8
 }
 
 define fastcc void @caller_to8_from8([8 x i32], i64 %a) {
-; CHECK: caller_to8_from8:
+; CHECK-LABEL: caller_to8_from8:
 ; CHECK: sub sp, sp, #16
 
 ; Key point is that the "%a" should go where at SP on entry.
   tail call fastcc void @callee_stack8([8 x i32] undef, i64 42)
   ret void
-; CHECK: str {{x[0-9]+}}, [sp, #16]
-; CHECK-NEXT: add sp, sp, #16
+
+; CHECK: str {{x[0-9]+}}, [sp, #16]!
 ; CHECK-NEXT: b callee_stack8
 }
 
 define fastcc void @caller_to16_from8([8 x i32], i64 %a) {
-; CHECK: caller_to16_from8:
+; CHECK-LABEL: caller_to16_from8:
 ; CHECK: sub sp, sp, #16
 
 ; Important point is that the call reuses the "dead" argument space
 ; above %a on the stack. If it tries to go below incoming-SP then the
 ; callee will not deallocate the space, even in fastcc.
   tail call fastcc void @callee_stack16([8 x i32] undef, i64 42, i64 2)
-; CHECK: str {{x[0-9]+}}, [sp, #24]
-; CHECK: str {{x[0-9]+}}, [sp, #16]
-; CHECK: add sp, sp, #16
-; CHECK: b callee_stack16
+
+; CHECK: stp {{x[0-9]+}}, {{x[0-9]+}}, [sp, #16]!
+; CHECK-NEXT: b callee_stack16
   ret void
 }
 
 
 define fastcc void @caller_to8_from24([8 x i32], i64 %a, i64 %b, i64 %c) {
-; CHECK: caller_to8_from24:
+; CHECK-LABEL: caller_to8_from24:
 ; CHECK: sub sp, sp, #16
 
 ; Key point is that the "%a" should go where at #16 above SP on entry.
   tail call fastcc void @callee_stack8([8 x i32] undef, i64 42)
   ret void
-; CHECK: str {{x[0-9]+}}, [sp, #32]
-; CHECK-NEXT: add sp, sp, #32
+
+; CHECK: str {{x[0-9]+}}, [sp, #32]!
 ; CHECK-NEXT: b callee_stack8
 }
 
 
 define fastcc void @caller_to16_from16([8 x i32], i64 %a, i64 %b) {
-; CHECK: caller_to16_from16:
+; CHECK-LABEL: caller_to16_from16:
 ; CHECK: sub sp, sp, #16
 
 ; Here we want to make sure that both loads happen before the stores:
@@ -84,11 +87,55 @@ define fastcc void @caller_to16_from16([8 x i32], i64 %a, i64 %b) {
   tail call fastcc void @callee_stack16([8 x i32] undef, i64 %b, i64 %a)
   ret void
 
-; CHECK: ldr x0,
-; CHECK: ldr x1,
-; CHECK: str x1,
-; CHECK: str x0,
+; CHECK: ldp {{x[0-9]+}}, {{x[0-9]+}}, [sp, #16]
+; CHECK: stp {{x[0-9]+}}, {{x[0-9]+}}, [sp, #16]!
+; CHECK-NEXT: b callee_stack16
+}
 
-; CHECK: add sp, sp, #16
-; CHECK: b callee_stack16
+
+; Weakly-referenced extern functions cannot be tail-called, as AAELF does
+; not define the behaviour of branch instructions to undefined weak symbols.
+define fastcc void @caller_weak() {
+; CHECK-LABEL: caller_weak:
+; CHECK: bl callee_weak
+  tail call void @callee_weak()
+  ret void
+}
+
+declare { [2 x float] } @get_vec2()
+
+define { [3 x float] } @test_add_elem() {
+; CHECK-LABEL: test_add_elem:
+; CHECK: bl get_vec2
+; CHECK: fmov s2, #1.0
+; CHECK: ret
+
+  %call = tail call { [2 x float] } @get_vec2()
+  %arr = extractvalue { [2 x float] } %call, 0
+  %arr.0 = extractvalue [2 x float] %arr, 0
+  %arr.1 = extractvalue [2 x float] %arr, 1
+
+  %res.0 = insertvalue { [3 x float] } undef, float %arr.0, 0, 0
+  %res.01 = insertvalue { [3 x float] } %res.0, float %arr.1, 0, 1
+  %res.012 = insertvalue { [3 x float] } %res.01, float 1.000000e+00, 0, 2
+  ret { [3 x float] } %res.012
+}
+
+declare double @get_double()
+define { double, [2 x double] } @test_mismatched_insert() {
+; CHECK-LABEL: test_mismatched_insert:
+; CHECK: bl get_double
+; CHECK: bl get_double
+; CHECK: bl get_double
+; CHECK: ret
+
+  %val0 = call double @get_double()
+  %val1 = call double @get_double()
+  %val2 = tail call double @get_double()
+
+  %res.0 = insertvalue { double, [2 x double] } undef, double %val0, 0
+  %res.01 = insertvalue { double, [2 x double] } %res.0, double %val1, 1, 0
+  %res.012 = insertvalue { double, [2 x double] } %res.01, double %val2, 1, 1
+
+  ret { double, [2 x double] } %res.012
 }