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Fixed GH Issue #41 (ir_emit_c() dumping misses BB label)

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This commit is contained in:
Dmitry Stogov 2023-05-29 13:58:32 +03:00
parent 20b9a7513c
commit 4d2ef9401f
2 changed files with 61 additions and 1 deletions
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5
ir_emit_c.c
View File

@ -768,7 +768,10 @@ static int ir_emit_func(ir_ctx *ctx, FILE *f)
if ((bb->flags & (IR_BB_START|IR_BB_ENTRY|IR_BB_EMPTY)) == IR_BB_EMPTY) {
continue;
}
if (bb->predecessors_count > 1 || (bb->predecessors_count == 1 && ctx->cfg_edges[bb->predecessors] != prev)) {
if (bb->predecessors_count > 1
|| (bb->predecessors_count == 1 && ctx->cfg_edges[bb->predecessors] != prev)
|| ctx->ir_base[bb->start].op == IR_CASE_VAL
|| ctx->ir_base[bb->start].op == IR_CASE_DEFAULT) {
fprintf(f, "bb%d:\n", b);
}
prev = b;

57
tests/c/switch_001.irt Normal file
View File

@ -0,0 +1,57 @@
--TEST--
SWITCH 001
--ARGS--
--emit-c
--CODE--
{
uintptr_t c_1 = 0;
bool c_2 = 0;
bool c_3 = 1;
int32_t c_4 = 1;
int32_t c_5 = 2;
int32_t c_6 = 3;
int32_t c_7 = 4;
l_1 = START(l_16);
int32_t d_2 = PARAM(l_1, "z", 0);
l_4 = SWITCH(l_1, d_2);
l_5 = CASE_VAL(l_4, c_4);
int32_t x_1 = COPY(c_4);
l_6 = END(l_5);
l_7 = CASE_VAL(l_4, c_5);
int32_t x_2 = COPY(c_5);
l_8 = END(l_7);
l_9 = CASE_VAL(l_4, c_6);
int32_t x_3 = COPY(c_6);
l_10 = END(l_9);
l_11 = CASE_DEFAULT(l_4);
int32_t x_4 = COPY(c_7);
l_12 = END(l_11);
l_13 = MERGE/4(l_6, l_8, l_10, l_12);
int32_t ret = PHI/4(l_13, x_1, x_2, x_3, x_4);
l_16 = RETURN(l_13, ret);
}
--EXPECT--
int32_t test(int32_t z)
{
int32_t d_1 = z;
int32_t d_2;
switch (d_1) {
case 1: goto bb2;
case 2: goto bb4;
case 3: goto bb5;
default: goto bb6;
}
bb2:
d_2 = 1;
bb3:
return d_2;
bb4:
d_2 = 2;
goto bb3;
bb5:
d_2 = 3;
goto bb3;
bb6:
d_2 = 4;
goto bb3;
}