diff options
| author | Rafael Espindola <rafael.espindola@gmail.com> | 2011-01-02 03:59:13 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2011-01-02 03:59:13 +0000 |
| commit | 33a53440eb025dc511b7dcb27dea8029cc28b34f (patch) | |
| tree | a3b36e174982d23ce66c28bda38e52a8a4edc1c6 | |
| parent | baf86955a9a390f2643a1ea9806832eb4a92f716 (diff) | |
Add support for passing variables declared to use a xmm register to asm
statements using the "x" constraint.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122679 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/CGStmt.cpp | 3 | ||||
| -rw-r--r-- | test/CodeGen/asm-variable.c | 32 |
2 files changed, 34 insertions, 1 deletions
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp index 8ccd2893b8..b86cdf861e 100644 --- a/lib/CodeGen/CGStmt.cpp +++ b/lib/CodeGen/CGStmt.cpp @@ -938,7 +938,8 @@ AddVariableConstraints(const std::string &Constraint, const Expr &AsmExpr, return Constraint; llvm::StringRef Register = Attr->getLabel(); assert(Target.isValidGCCRegisterName(Register)); - if (Constraint != "r") { + // FIXME: We should check which registers are compatible with "r" or "x". + if (Constraint != "r" && Constraint != "x") { CGM.ErrorUnsupported(&Stmt, "__asm__"); return Constraint; } diff --git a/test/CodeGen/asm-variable.c b/test/CodeGen/asm-variable.c index 7f74913298..a37132d16c 100644 --- a/test/CodeGen/asm-variable.c +++ b/test/CodeGen/asm-variable.c @@ -25,3 +25,35 @@ unsigned long long foo(unsigned long long addr, unsigned long long a0, } // CHECK: call i64 asm "call *$1", "={rax},r,{rdi},{rsi},{rdx},{rcx},{r8},{r9},~{dirflag},~{fpsr},~{flags}" + +unsigned long long foo2(unsigned long long addr, double a0, + double a1, double a2, + double a3, double a4, + double a5, double a6, double a7) { + register double b0 asm("xmm0"); + register double b1 asm("xmm1"); + register double b2 asm("xmm2"); + register double b3 asm("xmm3"); + register double b4 asm("xmm4"); + register double b5 asm("xmm5"); + register double b6 asm("xmm6"); + register double b7 asm("xmm7"); + + register unsigned long long result asm("rax"); + + b0 = a0; + b1 = a1; + b2 = a2; + b3 = a3; + b4 = a4; + b5 = a5; + b6 = a6; + b7 = a7; + + asm("call *%1" : "=r" (result) + : "r"(addr), "x" (b0), "x" (b1), "x" (b2), "x" (b3), "x" (b4), "x" (b5), "x" (b6), + "x" (b7)); + return result; +} + +// CHECK: call i64 asm "call *$1", "={rax},r,{xmm0},{xmm1},{xmm2},{xmm3},{xmm4},{xmm5},{xmm6},{xmm7},~{dirflag},~{fpsr},~{flags} |