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Handle __builtin_clzs and __builtin_ctzs in the constant expression evaluator. 

llvm-svn: 212464
This commit is contained in:
Anders Carlsson 2014-07-07 15:53:44 +00:00
parent ccef89db65
commit 1a9fe3d4db
2 changed files with 47 additions and 41 deletions
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6
clang/lib/AST/ExprConstant.cpp
View File

@ -6053,7 +6053,8 @@ bool IntExprEvaluator::VisitCallExpr(const CallExpr *E) {
case Builtin::BI__builtin_clz:
case Builtin::BI__builtin_clzl:
case Builtin::BI__builtin_clzll: {
case Builtin::BI__builtin_clzll:
case Builtin::BI__builtin_clzs: {
APSInt Val;
if (!EvaluateInteger(E->getArg(0), Val, Info))
return false;
@ -6068,7 +6069,8 @@ bool IntExprEvaluator::VisitCallExpr(const CallExpr *E) {
case Builtin::BI__builtin_ctz:
case Builtin::BI__builtin_ctzl:
case Builtin::BI__builtin_ctzll: {
case Builtin::BI__builtin_ctzll:
case Builtin::BI__builtin_ctzs: {
APSInt Val;
if (!EvaluateInteger(E->getArg(0), Val, Info))
return false;

82
clang/test/Sema/constant-builtins-2.c
View File

@ -112,49 +112,53 @@ char isnormal_snan [!__builtin_isnormal(__builtin_nans("")) ? 1 : -1];
//long double g21 = __builtin_powil(2.0L, 4);
#define BITSIZE(x) (sizeof(x) * 8)
char g22[__builtin_clz(1) == BITSIZE(int) - 1 ? 1 : -1];
char g23[__builtin_clz(7) == BITSIZE(int) - 3 ? 1 : -1];
char g24[__builtin_clz(1 << (BITSIZE(int) - 1)) == 0 ? 1 : -1];
int g25 = __builtin_clz(0); // expected-error {{not a compile-time constant}}
char g26[__builtin_clzl(0xFL) == BITSIZE(long) - 4 ? 1 : -1];
char g27[__builtin_clzll(0xFFLL) == BITSIZE(long long) - 8 ? 1 : -1];
char clz1[__builtin_clz(1) == BITSIZE(int) - 1 ? 1 : -1];
char clz2[__builtin_clz(7) == BITSIZE(int) - 3 ? 1 : -1];
char clz3[__builtin_clz(1 << (BITSIZE(int) - 1)) == 0 ? 1 : -1];
int clz4 = __builtin_clz(0); // expected-error {{not a compile-time constant}}
char clz5[__builtin_clzl(0xFL) == BITSIZE(long) - 4 ? 1 : -1];
char clz6[__builtin_clzll(0xFFLL) == BITSIZE(long long) - 8 ? 1 : -1];
char clz7[__builtin_clzs(0x1) == BITSIZE(short) - 1 ? 1 : -1];
char clz8[__builtin_clzs(0xf) == BITSIZE(short) - 4 ? 1 : -1];
char clz9[__builtin_clzs(0xfff) == BITSIZE(short) - 12 ? 1 : -1];
char g28[__builtin_ctz(1) == 0 ? 1 : -1];
char g29[__builtin_ctz(8) == 3 ? 1 : -1];
char g30[__builtin_ctz(1 << (BITSIZE(int) - 1)) == BITSIZE(int) - 1 ? 1 : -1];
int g31 = __builtin_ctz(0); // expected-error {{not a compile-time constant}}
char g32[__builtin_ctzl(0x10L) == 4 ? 1 : -1];
char g33[__builtin_ctzll(0x100LL) == 8 ? 1 : -1];
char ctz1[__builtin_ctz(1) == 0 ? 1 : -1];
char ctz2[__builtin_ctz(8) == 3 ? 1 : -1];
char ctz3[__builtin_ctz(1 << (BITSIZE(int) - 1)) == BITSIZE(int) - 1 ? 1 : -1];
int ctz4 = __builtin_ctz(0); // expected-error {{not a compile-time constant}}
char ctz5[__builtin_ctzl(0x10L) == 4 ? 1 : -1];
char ctz6[__builtin_ctzll(0x100LL) == 8 ? 1 : -1];
char ctz7[__builtin_ctzs(1 << (BITSIZE(short) - 1)) == BITSIZE(short) - 1 ? 1 : -1];
char g34[__builtin_popcount(0) == 0 ? 1 : -1];
char g35[__builtin_popcount(0xF0F0) == 8 ? 1 : -1];
char g36[__builtin_popcount(~0) == BITSIZE(int) ? 1 : -1];
char g37[__builtin_popcount(~0L) == BITSIZE(int) ? 1 : -1];
char g38[__builtin_popcountl(0L) == 0 ? 1 : -1];
char g39[__builtin_popcountl(0xF0F0L) == 8 ? 1 : -1];
char g40[__builtin_popcountl(~0L) == BITSIZE(long) ? 1 : -1];
char g41[__builtin_popcountll(0LL) == 0 ? 1 : -1];
char g42[__builtin_popcountll(0xF0F0LL) == 8 ? 1 : -1];
char g43[__builtin_popcountll(~0LL) == BITSIZE(long long) ? 1 : -1];
char popcount1[__builtin_popcount(0) == 0 ? 1 : -1];
char popcount2[__builtin_popcount(0xF0F0) == 8 ? 1 : -1];
char popcount3[__builtin_popcount(~0) == BITSIZE(int) ? 1 : -1];
char popcount4[__builtin_popcount(~0L) == BITSIZE(int) ? 1 : -1];
char popcount5[__builtin_popcountl(0L) == 0 ? 1 : -1];
char popcount6[__builtin_popcountl(0xF0F0L) == 8 ? 1 : -1];
char popcount7[__builtin_popcountl(~0L) == BITSIZE(long) ? 1 : -1];
char popcount8[__builtin_popcountll(0LL) == 0 ? 1 : -1];
char popcount9[__builtin_popcountll(0xF0F0LL) == 8 ? 1 : -1];
char popcount10[__builtin_popcountll(~0LL) == BITSIZE(long long) ? 1 : -1];
char g44[__builtin_parity(0) == 0 ? 1 : -1];
char g45[__builtin_parity(0xb821) == 0 ? 1 : -1];
char g46[__builtin_parity(0xb822) == 0 ? 1 : -1];
char g47[__builtin_parity(0xb823) == 1 ? 1 : -1];
char g48[__builtin_parity(0xb824) == 0 ? 1 : -1];
char g49[__builtin_parity(0xb825) == 1 ? 1 : -1];
char g50[__builtin_parity(0xb826) == 1 ? 1 : -1];
char g51[__builtin_parity(~0) == 0 ? 1 : -1];
char g52[__builtin_parityl(1L << (BITSIZE(long) - 1)) == 1 ? 1 : -1];
char g53[__builtin_parityll(1LL << (BITSIZE(long long) - 1)) == 1 ? 1 : -1];
char parity1[__builtin_parity(0) == 0 ? 1 : -1];
char parity2[__builtin_parity(0xb821) == 0 ? 1 : -1];
char parity3[__builtin_parity(0xb822) == 0 ? 1 : -1];
char parity4[__builtin_parity(0xb823) == 1 ? 1 : -1];
char parity5[__builtin_parity(0xb824) == 0 ? 1 : -1];
char parity6[__builtin_parity(0xb825) == 1 ? 1 : -1];
char parity7[__builtin_parity(0xb826) == 1 ? 1 : -1];
char parity8[__builtin_parity(~0) == 0 ? 1 : -1];
char parity9[__builtin_parityl(1L << (BITSIZE(long) - 1)) == 1 ? 1 : -1];
char parity10[__builtin_parityll(1LL << (BITSIZE(long long) - 1)) == 1 ? 1 : -1];
char g54[__builtin_ffs(0) == 0 ? 1 : -1];
char g55[__builtin_ffs(1) == 1 ? 1 : -1];
char g56[__builtin_ffs(0xfbe71) == 1 ? 1 : -1];
char g57[__builtin_ffs(0xfbe70) == 5 ? 1 : -1];
char g58[__builtin_ffs(1U << (BITSIZE(int) - 1)) == BITSIZE(int) ? 1 : -1];
char g59[__builtin_ffsl(0x10L) == 5 ? 1 : -1];
char g60[__builtin_ffsll(0x100LL) == 9 ? 1 : -1];
char ffs1[__builtin_ffs(0) == 0 ? 1 : -1];
char ffs2[__builtin_ffs(1) == 1 ? 1 : -1];
char ffs3[__builtin_ffs(0xfbe71) == 1 ? 1 : -1];
char ffs4[__builtin_ffs(0xfbe70) == 5 ? 1 : -1];
char ffs5[__builtin_ffs(1U << (BITSIZE(int) - 1)) == BITSIZE(int) ? 1 : -1];
char ffs6[__builtin_ffsl(0x10L) == 5 ? 1 : -1];
char ffs7[__builtin_ffsll(0x100LL) == 9 ? 1 : -1];
#undef BITSIZE
// GCC misc stuff