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(i8*) nounwind
8 declare void @llvm.va_end(i8*) nounwind
10 ; CHECK-LABEL: test_byval_8_bytes_alignment:
11 define void @test_byval_8_bytes_alignment(i32 %i, ...) {
13 ; CHECK: sub sp, sp, #12
14 ; CHECK: sub sp, sp, #4
15 ; CHECK: stmib sp, {r1, r2, r3}
17 %g1 = bitcast i8** %g to i8*
18 call void @llvm.va_start(i8* %g1)
20 ; CHECK: add [[REG:(r[0-9]+)|(lr)]], {{(r[0-9]+)|(lr)}}, #7
21 ; CHECK: bfc [[REG]], #0, #3
22 %0 = va_arg i8** %g, double
23 call void @llvm.va_end(i8* %g1)
29 ; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
30 ; CHECK: movt [[BASE]], :upper16:static_val
31 ; ldm is not formed when the coalescer failed to coalesce everything.
32 ; CHECK: ldrd r2, [[TMP:r[0-9]+]], {{\[}}[[BASE]]{{\]}}
33 ; CHECK: movw r0, #555
36 call void (i32, ...) @test_byval_8_bytes_alignment(i32 555, %struct_t* byval @static_val)
40 declare void @f(double);
42 ; CHECK-LABEL: test_byval_8_bytes_alignment_fixed_arg:
44 ; CHECK: str r3, [sp, #12]
45 ; CHECK: str r2, [sp, #8]
47 define void @test_byval_8_bytes_alignment_fixed_arg(i32 %n1, %struct_t* byval %val) nounwind {
49 %a = getelementptr inbounds %struct_t, %struct_t* %val, i32 0, i32 0
50 %0 = load double, double* %a
51 call void (double) @f(double %0)
55 ; CHECK-LABEL: main_fixed_arg:
56 ; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
57 ; CHECK: movt [[BASE]], :upper16:static_val
58 ; ldm is not formed when the coalescer failed to coalesce everything.
59 ; CHECK: ldrd r2, [[TMP:r[0-9]+]], {{\[}}[[BASE]]{{\]}}
60 ; CHECK: movw r0, #555
61 define i32 @main_fixed_arg() {
63 call void (i32, %struct_t*) @test_byval_8_bytes_alignment_fixed_arg(i32 555, %struct_t* byval @static_val)