forked from OSchip/llvm-project
67 lines
1.5 KiB
LLVM
67 lines
1.5 KiB
LLVM
; RUN: llc < %s -march=x86 | grep fldz
|
|
; RUN: llc < %s -march=x86-64 | grep fld1
|
|
|
|
%0 = type { x86_fp80, x86_fp80 }
|
|
|
|
; This is basically this code on x86-64:
|
|
; _Complex long double test() { return 1.0; }
|
|
define %0 @test() {
|
|
%A = fpext double 1.0 to x86_fp80
|
|
%B = fpext double 0.0 to x86_fp80
|
|
%mrv = insertvalue %0 undef, x86_fp80 %A, 0
|
|
%mrv1 = insertvalue %0 %mrv, x86_fp80 %B, 1
|
|
ret %0 %mrv1
|
|
}
|
|
|
|
|
|
;_test2:
|
|
; fld1
|
|
; fld %st(0)
|
|
; ret
|
|
define %0 @test2() {
|
|
%A = fpext double 1.0 to x86_fp80
|
|
%mrv = insertvalue %0 undef, x86_fp80 %A, 0
|
|
%mrv1 = insertvalue %0 %mrv, x86_fp80 %A, 1
|
|
ret %0 %mrv1
|
|
}
|
|
|
|
; Uses both values.
|
|
define void @call1(x86_fp80 *%P1, x86_fp80 *%P2) {
|
|
%a = call %0 @test()
|
|
%b = extractvalue %0 %a, 0
|
|
store x86_fp80 %b, x86_fp80* %P1
|
|
|
|
%c = extractvalue %0 %a, 1
|
|
store x86_fp80 %c, x86_fp80* %P2
|
|
ret void
|
|
}
|
|
|
|
; Uses both values, requires fxch
|
|
define void @call2(x86_fp80 *%P1, x86_fp80 *%P2) {
|
|
%a = call %0 @test()
|
|
%b = extractvalue %0 %a, 1
|
|
store x86_fp80 %b, x86_fp80* %P1
|
|
|
|
%c = extractvalue %0 %a, 0
|
|
store x86_fp80 %c, x86_fp80* %P2
|
|
ret void
|
|
}
|
|
|
|
; Uses ST(0), ST(1) is dead but must be popped.
|
|
define void @call3(x86_fp80 *%P1, x86_fp80 *%P2) {
|
|
%a = call %0 @test()
|
|
%b = extractvalue %0 %a, 0
|
|
store x86_fp80 %b, x86_fp80* %P1
|
|
ret void
|
|
}
|
|
|
|
; Uses ST(1), ST(0) is dead and must be popped.
|
|
define void @call4(x86_fp80 *%P1, x86_fp80 *%P2) {
|
|
%a = call %0 @test()
|
|
|
|
%c = extractvalue %0 %a, 1
|
|
store x86_fp80 %c, x86_fp80* %P2
|
|
ret void
|
|
}
|
|
|