1 ; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi | FileCheck %s
2 ; Test that we correctly use registers and align elements when using va_arg
4 %struct_t = type { double, double, double }
5 @static_val = constant %struct_t { double 1.0, double 2.0, double 3.0 }
7 declare void @llvm.va_start(ptr) nounwind
8 declare void @llvm.va_end(ptr) nounwind
10 ; CHECK-LABEL: test_byval_8_bytes_alignment:
11 define void @test_byval_8_bytes_alignment(i32 %i, ...) {
13 ; CHECK: sub sp, sp, #16
14 ; CHECK: add r0, sp, #4
15 ; CHECK: stmib sp, {r1, r2, r3}
17 call void @llvm.va_start(ptr %g)
19 ; CHECK: add [[REG:(r[0-9]+)|(lr)]], {{(r[0-9]+)|(lr)}}, #7
20 ; CHECK: bic [[REG]], [[REG]], #7
21 %0 = va_arg ptr %g, double
22 call void @llvm.va_end(ptr %g)
28 ; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
29 ; CHECK: movt [[BASE]], :upper16:static_val
30 ; ldm is not formed when the coalescer failed to coalesce everything.
31 ; CHECK: ldrd r2, [[TMP:r[0-9]+]], [[[BASE]]]
32 ; CHECK: movw r0, #555
35 call void (i32, ...) @test_byval_8_bytes_alignment(i32 555, ptr byval(%struct_t) @static_val)
39 declare void @f(double);
41 ; CHECK-LABEL: test_byval_8_bytes_alignment_fixed_arg:
43 ; CHECK-DAG: str r3, [sp, #12]
44 ; CHECK-DAG: str r2, [sp, #8]
46 define void @test_byval_8_bytes_alignment_fixed_arg(i32 %n1, ptr byval(%struct_t) %val) nounwind {
48 %0 = load double, ptr %val
49 call void (double) @f(double %0)
53 ; CHECK-LABEL: main_fixed_arg:
54 ; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
55 ; CHECK: movt [[BASE]], :upper16:static_val
56 ; ldm is not formed when the coalescer failed to coalesce everything.
57 ; CHECK: ldrd r2, [[TMP:r[0-9]+]], [[[BASE]]]
58 ; CHECK: movw r0, #555
59 define i32 @main_fixed_arg() {
61 call void (i32, ptr) @test_byval_8_bytes_alignment_fixed_arg(i32 555, ptr byval(%struct_t) @static_val)