clang/test/CodeGen/mingw-long-double.c

   1 // RUN: %clang_cc1 -triple i686-windows-gnu -emit-llvm -o - %s \
   2 // RUN:    | FileCheck %s --check-prefix=GNU32
   3 // RUN: %clang_cc1 -triple i686-windows-gnu -emit-llvm -o - %s -mms-bitfields \
   4 // RUN:    | FileCheck %s --check-prefix=GNU32
   5 // RUN: %clang_cc1 -triple x86_64-windows-gnu -emit-llvm -o - %s \
   6 // RUN:    | FileCheck %s --check-prefix=GNU64
   7 // RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -o - %s \
   8 // RUN:    | FileCheck %s --check-prefix=MSC64
   9
  10 struct {
  11   char c;
  12   long double ldb;
  13 } agggregate_LD = {};
  14 // GNU32: @agggregate_LD = dso_local global { i8, [3 x i8], x86_fp80 } zeroinitializer, align 4
  15 // GNU64: @agggregate_LD = dso_local global { i8, [15 x i8], x86_fp80 } zeroinitializer, align 16
  16 // MSC64: @agggregate_LD = dso_local global { i8, [7 x i8], double } zeroinitializer, align 8
  17
  18 long double dataLD = 1.0L;
  19 // GNU32: @dataLD = dso_local global x86_fp80 0xK3FFF8000000000000000, align 4
  20 // GNU64: @dataLD = dso_local global x86_fp80 0xK3FFF8000000000000000, align 16
  21 // MSC64: @dataLD = dso_local global double 1.000000e+00, align 8
  22
  23 long double _Complex dataLDC = {1.0L, 1.0L};
  24 // GNU32: @dataLDC = dso_local global { x86_fp80, x86_fp80 } { x86_fp80 0xK3FFF8000000000000000, x86_fp80 0xK3FFF8000000000000000 }, align 4
  25 // GNU64: @dataLDC = dso_local global { x86_fp80, x86_fp80 } { x86_fp80 0xK3FFF8000000000000000, x86_fp80 0xK3FFF8000000000000000 }, align 16
  26 // MSC64: @dataLDC = dso_local global { double, double } { double 1.000000e+00, double 1.000000e+00 }, align 8
  27
  28 long double TestLD(long double x) {
  29   return x * x;
  30 }
  31 // GNU32: define dso_local x86_fp80 @TestLD(x86_fp80 noundef %x)
  32 // GNU64: define dso_local void @TestLD(ptr dead_on_unwind noalias writable sret(x86_fp80) align 16 %agg.result, ptr noundef %0)
  33 // MSC64: define dso_local double @TestLD(double noundef %x)
  34
  35 long double _Complex TestLDC(long double _Complex x) {
  36   return x * x;
  37 }
  38 // GNU32: define dso_local void @TestLDC(ptr dead_on_unwind noalias writable sret({ x86_fp80, x86_fp80 }) align 4 %agg.result, ptr noundef byval({ x86_fp80, x86_fp80 }) align 4 %x)
  39 // GNU64: define dso_local void @TestLDC(ptr dead_on_unwind noalias writable sret({ x86_fp80, x86_fp80 }) align 16 %agg.result, ptr noundef %x)
  40 // MSC64: define dso_local void @TestLDC(ptr dead_on_unwind noalias writable sret({ double, double }) align 8 %agg.result, ptr noundef %x)
  41
  42 // GNU32: declare dso_local void @__mulxc3
  43 // GNU64: declare dso_local void @__mulxc3
  44 // MSC64: declare dso_local void @__muldc3
  45
  46 void VarArgLD(int a, ...) {
  47   // GNU32-LABEL: define{{.*}} void @VarArgLD
  48   // GNU64-LABEL: define{{.*}} void @VarArgLD
  49   // MSC64-LABEL: define{{.*}} void @VarArgLD
  50   __builtin_va_list ap;
  51   __builtin_va_start(ap, a);
  52   long double LD = __builtin_va_arg(ap, long double);
  53   // GNU32: load x86_fp80, ptr %argp.cur
  54   // GNU64: [[P:%.*]] = load ptr, ptr %argp.cur
  55   // GNU64: load x86_fp80, ptr [[P]]
  56   // MSC64: load double, ptr %argp.cur
  57   __builtin_va_end(ap);
  58 }