diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp
index bf801cfb13..2d679e036e 100644
--- a/src/corelib/tools/qsimd.cpp
+++ b/src/corelib/tools/qsimd.cpp
@@ -157,7 +157,7 @@ static inline uint detectProcessorFeatures()
 static int maxBasicCpuidSupported()
 {
 #if defined(Q_CC_GNU)
-    qintptr tmp1;
+    qregisterint tmp1;
 
 # if Q_PROCESSOR_X86 < 5
     // check if the CPUID instruction is supported
@@ -198,7 +198,7 @@ static int maxBasicCpuidSupported()
 static void cpuidFeatures01(uint &ecx, uint &edx)
 {
 #if defined(Q_CC_GNU)
-    qintptr tmp1;
+    qregisterint tmp1;
     asm ("xchg " PICreg", %2\n"
          "cpuid\n"
          "xchg " PICreg", %2\n"
@@ -219,7 +219,7 @@ inline void __cpuidex(int info[4], int, __int64) { memset(info, 0, 4*sizeof(int)
 static void cpuidFeatures07_00(uint &ebx)
 {
 #if defined(Q_CC_GNU)
-    quintptr rbx; // in case it's 64-bit
+    qregisteruint rbx; // in case it's 64-bit
     asm ("xchg " PICreg", %0\n"
          "cpuid\n"
          "xchg " PICreg", %0\n"