1 ; RUN: llc < %s -march=x86 | grep fldz
2 ; RUN: llc < %s -march=x86-64 | grep fld1
4 ; This is basically this code on x86-64:
5 ; _Complex long double test() { return 1.0; }
6 define {x86_fp80, x86_fp80} @test() {
7 %A = fpext double 1.0 to x86_fp80
8 %B = fpext double 0.0 to x86_fp80
9 ret x86_fp80 %A, x86_fp80 %B
17 define {x86_fp80, x86_fp80} @test2() {
18 %A = fpext double 1.0 to x86_fp80
19 ret x86_fp80 %A, x86_fp80 %A
23 define void @call1(x86_fp80 *%P1, x86_fp80 *%P2) {
24 %a = call {x86_fp80,x86_fp80} @test()
25 %b = getresult {x86_fp80,x86_fp80} %a, 0
26 store x86_fp80 %b, x86_fp80* %P1
28 %c = getresult {x86_fp80,x86_fp80} %a, 1
29 store x86_fp80 %c, x86_fp80* %P2
33 ; Uses both values, requires fxch
34 define void @call2(x86_fp80 *%P1, x86_fp80 *%P2) {
35 %a = call {x86_fp80,x86_fp80} @test()
36 %b = getresult {x86_fp80,x86_fp80} %a, 1
37 store x86_fp80 %b, x86_fp80* %P1
39 %c = getresult {x86_fp80,x86_fp80} %a, 0
40 store x86_fp80 %c, x86_fp80* %P2
44 ; Uses ST(0), ST(1) is dead but must be popped.
45 define void @call3(x86_fp80 *%P1, x86_fp80 *%P2) {
46 %a = call {x86_fp80,x86_fp80} @test()
47 %b = getresult {x86_fp80,x86_fp80} %a, 0
48 store x86_fp80 %b, x86_fp80* %P1
52 ; Uses ST(1), ST(0) is dead and must be popped.
53 define void @call4(x86_fp80 *%P1, x86_fp80 *%P2) {
54 %a = call {x86_fp80,x86_fp80} @test()
56 %c = getresult {x86_fp80,x86_fp80} %a, 1
57 store x86_fp80 %c, x86_fp80* %P2