forked from OSchip/llvm-project
52 lines
1.7 KiB
LLVM
52 lines
1.7 KiB
LLVM
; RUN: llvm-as -f %s -o - | llc
|
|
|
|
; Test that a negative constant smaller than 64 bits (e.g., int)
|
|
; is correctly implemented with sign-extension.
|
|
; In particular, the current code generated is:
|
|
;
|
|
; main:
|
|
; .L_main_LL_0:
|
|
; save %o6, -224, %o6
|
|
; setx .G_fmtArg_1, %o1, %o0
|
|
; setuw 1, %o1 ! i = 1
|
|
; setuw 4294967295, %o3 ! THE BUG: 0x00000000ffffffff
|
|
; setsw 0, %i0
|
|
; add %i6, 1999, %o2 ! fval
|
|
; add %o1, %g0, %o1
|
|
; add %o0, 0, %o0
|
|
; mulx %o1, %o3, %o1 ! ERROR: 0xffffffff; should be -1
|
|
; add %o1, 3, %o1 ! ERROR: 0x100000002; should be 0x2
|
|
; mulx %o1, 12, %o3 !
|
|
; add %o2, %o3, %o3 ! produces bad address!
|
|
; call printf
|
|
; nop
|
|
; jmpl %i7+8, %g0
|
|
; restore %g0, 0, %g0
|
|
;
|
|
; llc produces:
|
|
; ioff = 2 fval = 0xffffffff7fffec90 &fval[2] = 0xb7fffeca8
|
|
; instead of:
|
|
; ioff = 2 fval = 0xffffffff7fffec90 &fval[2] = 0xffffffff7fffeca8
|
|
;
|
|
|
|
%Results = type { float, float, float }
|
|
|
|
%fmtArg = internal global [39 x sbyte] c"ioff = %u\09fval = 0x%p\09&fval[2] = 0x%p\0A\00"; <[39 x sbyte]*> [#uses=1]
|
|
|
|
implementation
|
|
|
|
declare int "printf"(sbyte*, ...)
|
|
|
|
int "main"()
|
|
begin
|
|
%fval = alloca %Results, uint 4
|
|
%i = add uint 1, 0 ; i = 1
|
|
%iscale = mul uint %i, 4294967295 ; i*-1 = -1
|
|
%ioff = add uint %iscale, 3 ; 3+(-i) = 2
|
|
%ioff = cast uint %ioff to long
|
|
%fptr = getelementptr %Results* %fval, long %ioff ; &fval[2]
|
|
%castFmt = getelementptr [39 x sbyte]* %fmtArg, long 0, long 0
|
|
call int (sbyte*, ...)* %printf(sbyte* %castFmt, uint %ioff, %Results* %fval, %Results* %fptr)
|
|
ret int 0
|
|
end
|