diff options
Diffstat (limited to 'gcc/config/sparc/sparc.c')
| -rw-r--r-- | gcc/config/sparc/sparc.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index 76ccb34..2192d96 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -48,17 +48,6 @@ Boston, MA 02111-1307, USA. */ #include "target-def.h" #include "cfglayout.h" -/* 1 if the caller has placed an "unimp" insn immediately after the call. - This is used in v8 code when calling a function that returns a structure. - v9 doesn't have this. Be careful to have this test be the same as that - used on the call. */ - -#define SKIP_CALLERS_UNIMP_P \ -(!TARGET_ARCH64 && current_function_returns_struct \ - && ! integer_zerop (DECL_SIZE (DECL_RESULT (current_function_decl))) \ - && (TREE_CODE (DECL_SIZE (DECL_RESULT (current_function_decl))) \ - == INTEGER_CST)) - /* Global variables for machine-dependent things. */ /* Size of frame. Need to know this to emit return insns from leaf procedures. @@ -81,6 +70,7 @@ rtx sparc_compare_op0, sparc_compare_op1; /* Coordinate with the md file wrt special insns created by sparc_function_epilogue. */ bool sparc_emitting_epilogue; +bool sparc_skip_caller_unimp; /* Vector to say how input registers are mapped to output registers. HARD_FRAME_POINTER_REGNUM cannot be remapped by this function to @@ -4498,6 +4488,17 @@ sparc_function_epilogue (FILE *file, { const char *ret; + /* True if the caller has placed an "unimp" insn immediately after the call. + This insn is used in the 32-bit ABI when calling a function that returns + a non zero-sized structure. The 64-bit ABI doesn't have it. Be careful + to have this test be the same as that used on the call. */ + sparc_skip_caller_unimp = + ! TARGET_ARCH64 + && current_function_returns_struct + && (TREE_CODE (DECL_SIZE (DECL_RESULT (current_function_decl))) + == INTEGER_CST) + && ! integer_zerop (DECL_SIZE (DECL_RESULT (current_function_decl))); + if (current_function_epilogue_delay_list == 0) { /* If code does not drop into the epilogue, we need @@ -4532,9 +4533,9 @@ sparc_function_epilogue (FILE *file, /* Work out how to skip the caller's unimp instruction if required. */ if (leaf_function) - ret = (SKIP_CALLERS_UNIMP_P ? "jmp\t%o7+12" : "retl"); + ret = (sparc_skip_caller_unimp ? "jmp\t%o7+12" : "retl"); else - ret = (SKIP_CALLERS_UNIMP_P ? "jmp\t%i7+12" : "ret"); + ret = (sparc_skip_caller_unimp ? "jmp\t%i7+12" : "ret"); if (! leaf_function) { @@ -4542,7 +4543,7 @@ sparc_function_epilogue (FILE *file, { if (current_function_epilogue_delay_list) abort (); - if (SKIP_CALLERS_UNIMP_P) + if (sparc_skip_caller_unimp) abort (); fputs ("\trestore\n\tretl\n\tadd\t%sp, %g1, %sp\n", file); @@ -4555,7 +4556,7 @@ sparc_function_epilogue (FILE *file, if (TARGET_V9 && ! epilogue_renumber (&delay, 1)) { epilogue_renumber (&delay, 0); - fputs (SKIP_CALLERS_UNIMP_P + fputs (sparc_skip_caller_unimp ? "\treturn\t%i7+12\n" : "\treturn\t%i7+8\n", file); final_scan_insn (XEXP (current_function_epilogue_delay_list, 0), @@ -4588,7 +4589,7 @@ sparc_function_epilogue (FILE *file, sparc_emitting_epilogue = false; } } - else if (TARGET_V9 && ! SKIP_CALLERS_UNIMP_P) + else if (TARGET_V9 && ! sparc_skip_caller_unimp) fputs ("\treturn\t%i7+8\n\tnop\n", file); else fprintf (file, "\t%s\n\trestore\n", ret); |