You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
2.1 KiB
67 lines
2.1 KiB
; RUN: llc < %s -mtriple=armv7-none-linux-gnueabi | FileCheck %s
|
|
; Test that we correctly use registers and align elements when using va_arg
|
|
|
|
%struct_t = type { double, double, double }
|
|
@static_val = constant %struct_t { double 1.0, double 2.0, double 3.0 }
|
|
|
|
declare void @llvm.va_start(i8*) nounwind
|
|
declare void @llvm.va_end(i8*) nounwind
|
|
|
|
; CHECK-LABEL: test_byval_8_bytes_alignment:
|
|
define void @test_byval_8_bytes_alignment(i32 %i, ...) {
|
|
entry:
|
|
; CHECK: sub sp, sp, #12
|
|
; CHECK: sub sp, sp, #4
|
|
; CHECK: add r0, sp, #4
|
|
; CHECK: stmib sp, {r1, r2, r3}
|
|
%g = alloca i8*
|
|
%g1 = bitcast i8** %g to i8*
|
|
call void @llvm.va_start(i8* %g1)
|
|
|
|
; CHECK: add [[REG:(r[0-9]+)|(lr)]], {{(r[0-9]+)|(lr)}}, #7
|
|
; CHECK: bic [[REG]], [[REG]], #7
|
|
%0 = va_arg i8** %g, double
|
|
call void @llvm.va_end(i8* %g1)
|
|
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: main:
|
|
; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
|
|
; CHECK: movt [[BASE]], :upper16:static_val
|
|
; ldm is not formed when the coalescer failed to coalesce everything.
|
|
; CHECK: ldrd r2, [[TMP:r[0-9]+]], {{\[}}[[BASE]]{{\]}}
|
|
; CHECK: movw r0, #555
|
|
define i32 @main() {
|
|
entry:
|
|
call void (i32, ...) @test_byval_8_bytes_alignment(i32 555, %struct_t* byval(%struct_t) @static_val)
|
|
ret i32 0
|
|
}
|
|
|
|
declare void @f(double);
|
|
|
|
; CHECK-LABEL: test_byval_8_bytes_alignment_fixed_arg:
|
|
; CHECK-NOT: str r1
|
|
; CHECK-DAG: str r3, [sp, #12]
|
|
; CHECK-DAG: str r2, [sp, #8]
|
|
; CHECK-NOT: str r1
|
|
define void @test_byval_8_bytes_alignment_fixed_arg(i32 %n1, %struct_t* byval(%struct_t) %val) nounwind {
|
|
entry:
|
|
%a = getelementptr inbounds %struct_t, %struct_t* %val, i32 0, i32 0
|
|
%0 = load double, double* %a
|
|
call void (double) @f(double %0)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: main_fixed_arg:
|
|
; CHECK: movw [[BASE:r[0-9]+]], :lower16:static_val
|
|
; CHECK: movt [[BASE]], :upper16:static_val
|
|
; ldm is not formed when the coalescer failed to coalesce everything.
|
|
; CHECK: ldrd r2, [[TMP:r[0-9]+]], {{\[}}[[BASE]]{{\]}}
|
|
; CHECK: movw r0, #555
|
|
define i32 @main_fixed_arg() {
|
|
entry:
|
|
call void (i32, %struct_t*) @test_byval_8_bytes_alignment_fixed_arg(i32 555, %struct_t* byval(%struct_t) @static_val)
|
|
ret i32 0
|
|
}
|