mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-16 11:30:51 +00:00
a867f37897
For function calls on the 64-bit PowerPC SVR4 target, each parameter is mapped to as many doublewords in the parameter save area as necessary to hold the parameter. The first 13 non-varargs floating-point values are passed in registers; any additional floating-point parameters are passed in the parameter save area. A single-precision floating-point parameter (32 bits) must be mapped to the second (rightmost, low-order) word of its assigned doubleword slot. Currently LLVM violates this ABI requirement by mapping such a parameter to the first (leftmost, high-order) word of its assigned doubleword slot. This is internally self-consistent but will not interoperate correctly with libraries compiled with an ABI-compliant compiler. This patch corrects the problem by adjusting the parameter addressing on both sides of the calling convention. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165714 91177308-0d34-0410-b5e6-96231b3b80d8
98 lines
3.6 KiB
LLVM
98 lines
3.6 KiB
LLVM
; RUN: llc -O0 -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s
|
|
|
|
; This verifies that single-precision floating point values that can't
|
|
; be passed in registers are stored in the rightmost word of the parameter
|
|
; save area slot. There are 13 architected floating-point registers, so
|
|
; the 14th is passed in storage. The address of the 14th argument is
|
|
; 48 (fixed size of the linkage area) + 13 * 8 (first 13 args) + 4
|
|
; (offset to second word) = 156.
|
|
|
|
define float @bar(float %a, float %b, float %c, float %d, float %e, float %f, float %g, float %h, float %i, float %j, float %k, float %l, float %m, float %n) nounwind {
|
|
entry:
|
|
%a.addr = alloca float, align 4
|
|
%b.addr = alloca float, align 4
|
|
%c.addr = alloca float, align 4
|
|
%d.addr = alloca float, align 4
|
|
%e.addr = alloca float, align 4
|
|
%f.addr = alloca float, align 4
|
|
%g.addr = alloca float, align 4
|
|
%h.addr = alloca float, align 4
|
|
%i.addr = alloca float, align 4
|
|
%j.addr = alloca float, align 4
|
|
%k.addr = alloca float, align 4
|
|
%l.addr = alloca float, align 4
|
|
%m.addr = alloca float, align 4
|
|
%n.addr = alloca float, align 4
|
|
store float %a, float* %a.addr, align 4
|
|
store float %b, float* %b.addr, align 4
|
|
store float %c, float* %c.addr, align 4
|
|
store float %d, float* %d.addr, align 4
|
|
store float %e, float* %e.addr, align 4
|
|
store float %f, float* %f.addr, align 4
|
|
store float %g, float* %g.addr, align 4
|
|
store float %h, float* %h.addr, align 4
|
|
store float %i, float* %i.addr, align 4
|
|
store float %j, float* %j.addr, align 4
|
|
store float %k, float* %k.addr, align 4
|
|
store float %l, float* %l.addr, align 4
|
|
store float %m, float* %m.addr, align 4
|
|
store float %n, float* %n.addr, align 4
|
|
%0 = load float* %n.addr, align 4
|
|
ret float %0
|
|
}
|
|
|
|
; CHECK: lfs {{[0-9]+}}, 156(1)
|
|
|
|
define float @foo() nounwind {
|
|
entry:
|
|
%a = alloca float, align 4
|
|
%b = alloca float, align 4
|
|
%c = alloca float, align 4
|
|
%d = alloca float, align 4
|
|
%e = alloca float, align 4
|
|
%f = alloca float, align 4
|
|
%g = alloca float, align 4
|
|
%h = alloca float, align 4
|
|
%i = alloca float, align 4
|
|
%j = alloca float, align 4
|
|
%k = alloca float, align 4
|
|
%l = alloca float, align 4
|
|
%m = alloca float, align 4
|
|
%n = alloca float, align 4
|
|
store float 1.000000e+00, float* %a, align 4
|
|
store float 2.000000e+00, float* %b, align 4
|
|
store float 3.000000e+00, float* %c, align 4
|
|
store float 4.000000e+00, float* %d, align 4
|
|
store float 5.000000e+00, float* %e, align 4
|
|
store float 6.000000e+00, float* %f, align 4
|
|
store float 7.000000e+00, float* %g, align 4
|
|
store float 8.000000e+00, float* %h, align 4
|
|
store float 9.000000e+00, float* %i, align 4
|
|
store float 1.000000e+01, float* %j, align 4
|
|
store float 1.100000e+01, float* %k, align 4
|
|
store float 1.200000e+01, float* %l, align 4
|
|
store float 1.300000e+01, float* %m, align 4
|
|
store float 1.400000e+01, float* %n, align 4
|
|
%0 = load float* %a, align 4
|
|
%1 = load float* %b, align 4
|
|
%2 = load float* %c, align 4
|
|
%3 = load float* %d, align 4
|
|
%4 = load float* %e, align 4
|
|
%5 = load float* %f, align 4
|
|
%6 = load float* %g, align 4
|
|
%7 = load float* %h, align 4
|
|
%8 = load float* %i, align 4
|
|
%9 = load float* %j, align 4
|
|
%10 = load float* %k, align 4
|
|
%11 = load float* %l, align 4
|
|
%12 = load float* %m, align 4
|
|
%13 = load float* %n, align 4
|
|
%call = call float @bar(float %0, float %1, float %2, float %3, float %4, float %5, float %6, float %7, float %8, float %9, float %10, float %11, float %12, float %13)
|
|
ret float %call
|
|
}
|
|
|
|
; Note that stw is used instead of stfs because the value is a simple
|
|
; constant that can be created with a load-immediate in a GPR.
|
|
; CHECK: stw {{[0-9]+}}, 156(1)
|
|
|