tcg/ppc: Remove support for 32-bit hosts

32-bit host support is deprecated since commit 6d701c9bac
("meson: Deprecate 32-bit host support"), released as v10.0.
The next release being v10.2, we can remove the TCG backend
for 32-bit PPC hosts.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20251014173900.87497-2-philmd@linaro.org>

tcg/ppc/tcg-target-has.h

@@ -17,12 +17,9 @@
 #define have_vsx       (cpuinfo & CPUINFO_VSX)
 
 /* optional instructions */
-#if TCG_TARGET_REG_BITS == 64
 #define TCG_TARGET_HAS_extr_i64_i32     0
-#endif
 
-#define TCG_TARGET_HAS_qemu_ldst_i128   \
-    (TCG_TARGET_REG_BITS == 64 && have_isa_2_07)
+#define TCG_TARGET_HAS_qemu_ldst_i128   have_isa_2_07
 
 #define TCG_TARGET_HAS_tst              1
 

tcg/ppc/tcg-target-reg-bits.h

@@ -7,10 +7,10 @@
 #ifndef TCG_TARGET_REG_BITS_H
 #define TCG_TARGET_REG_BITS_H
 
-#ifdef _ARCH_PPC64
-# define TCG_TARGET_REG_BITS  64
-#else
-# define TCG_TARGET_REG_BITS  32
+#ifndef _ARCH_PPC64
+# error Expecting 64-bit host architecture
 #endif
 
+#define TCG_TARGET_REG_BITS  64
+
 #endif