1 ; RUN: llc < %s 2 3 ; Test that a negative constant smaller than 64 bits (e.g., int) 4 ; is correctly implemented with sign-extension. 5 ; In particular, the current code generated is: 6 ; 7 ; main: 8 ; .L_main_LL_0: 9 ; save %o6, -224, %o6 10 ; setx .G_fmtArg_1, %o1, %o0 11 ; setuw 1, %o1 ! i = 1 12 ; setuw 4294967295, %o3 ! THE BUG: 0x00000000ffffffff 13 ; setsw 0, %i0 14 ; add %i6, 1999, %o2 ! fval 15 ; add %o1, %g0, %o1 16 ; add %o0, 0, %o0 17 ; mulx %o1, %o3, %o1 ! ERROR: 0xffffffff; should be -1 18 ; add %o1, 3, %o1 ! ERROR: 0x100000002; should be 0x2 19 ; mulx %o1, 12, %o3 ! 20 ; add %o2, %o3, %o3 ! produces bad address! 21 ; call printf 22 ; nop 23 ; jmpl %i7+8, %g0 24 ; restore %g0, 0, %g0 25 ; 26 ; llc produces: 27 ; ioff = 2 fval = 0xffffffff7fffec90 &fval[2] = 0xb7fffeca8 28 ; instead of: 29 ; ioff = 2 fval = 0xffffffff7fffec90 &fval[2] = 0xffffffff7fffeca8 30 ; 31 %Results = type { float, float, float } 32 @fmtArg = internal global [39 x i8] c"ioff = %u\09fval = 0x%p\09&fval[2] = 0x%p\0A\00" ; <[39 x i8]*> [#uses=1] 33 34 declare i32 @printf(i8*, ...) 35 36 define i32 @main() { 37 %fval = alloca %Results, i32 4 ; <%Results*> [#uses=2] 38 %i = add i32 1, 0 ; <i32> [#uses=1] 39 %iscale = mul i32 %i, -1 ; <i32> [#uses=1] 40 %ioff = add i32 %iscale, 3 ; <i32> [#uses=2] 41 %ioff.upgrd.1 = zext i32 %ioff to i64 ; <i64> [#uses=1] 42 %fptr = getelementptr %Results* %fval, i64 %ioff.upgrd.1 ; <%Results*> [#uses=1] 43 %castFmt = getelementptr [39 x i8]* @fmtArg, i64 0, i64 0 ; <i8*> [#uses=1] 44 call i32 (i8*, ...)* @printf( i8* %castFmt, i32 %ioff, %Results* %fval, %Results* %fptr ) ; <i32>:1 [#uses=0] 45 ret i32 0 46 } 47 48
