Fixed be_Return simulation: pop the stack only if floating point values are returned

[libfirm] / ir / be / ia32 / bearch_ia32_t.h

diff --git a/ir/be/ia32/bearch_ia32_t.h b/ir/be/ia32/bearch_ia32_t.h
index 32c4705..7ce596b 100644 (file)
--- a/ir/be/ia32/bearch_ia32_t.h
+++ b/ir/be/ia32/bearch_ia32_t.h
@@ -29,7 +29,10 @@ typedef enum _ia32_optimize_t {
        IA32_OPT_EXTBB     = 16,  /**< do extended basic block scheduling */
 } ia32_optimize_t;
 
-/** architectures */
+/**
+ * Architectures. Clustered for easier macro implementation,
+ * do not change.
+ */
 typedef enum cpu_support {
        arch_i386,          /**< i386 */
        arch_i486,          /**< i486 */
@@ -47,6 +50,15 @@ typedef enum cpu_support {
        arch_opteron,       /**< Opteron */
 } cpu_support;
 
+/** checks for l <= x <= h */
+#define _IN_RANGE(x, l, h)     ((unsigned)((x) - (l)) <= (unsigned)((h) - (l)))
+
+/** returns true if it's Intel architecture */
+#define ARCH_INTEL(x)          _IN_RANGE((x), arch_i386, arch_core)
+
+/** returns true if it's AMD architecture */
+#define ARCH_AMD(x)                    _IN_RANGE((x), arch_k6, arch_opteron)
+
 /** floating point support */
 typedef enum fp_support {
        fp_none,  /**< no floating point instructions are used */
@@ -54,6 +66,15 @@ typedef enum fp_support {
        fp_sse2   /**< use SSE2 instructions */
 } fp_support;
 
+/** Sets the used flag to the current floating point architecture. */
+#define FP_USED(cg)  ((cg)->used_fp = (cg)->fp_kind)
+
+/** Returns non-zero if the current floating point architecture is SSE2. */
+#define USE_SSE2(cg) ((cg)->fp_kind == fp_sse2)
+
+/** Returns non-zero if the current floating point architecture is x87. */
+#define USE_x87(cg)  ((cg)->fp_kind == fp_x87)
+
 typedef struct _ia32_isa_t ia32_isa_t;
 
 /**