diff --git a/gcc/testsuite/g++.dg/pr48633.C b/gcc/testsuite/g++.dg/pr48633.C
index 90f053a74c88a5c6fe5310dec5b113dbf0c8b5ae..efcdab02acbd63ee784cfbff8aa72fa48dc90d7d 100644
--- a/gcc/testsuite/g++.dg/pr48633.C
+++ b/gcc/testsuite/g++.dg/pr48633.C
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -fira-region=all -fnon-call-exceptions" } */
 extern long double getme (void);
 extern void useme (long double);
diff --git a/gcc/testsuite/g++.dg/pr96707.C b/gcc/testsuite/g++.dg/pr96707.C
index 2653fe3d043177c4326a34b59e47d324c06977b1..868ee416e2692c01feeeb8e70ab99e38988a2f1f 100644
--- a/gcc/testsuite/g++.dg/pr96707.C
+++ b/gcc/testsuite/g++.dg/pr96707.C
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-evrp" } */
 
 bool f(unsigned x, unsigned y)
diff --git a/gcc/testsuite/g++.target/i386/mv28.C b/gcc/testsuite/g++.target/i386/mv28.C
index 9a0419c058d3701f3204f192d1a914b235dc5a17..c377d23a4241de79f3cfa35f33472b3f5030b8d0 100644
--- a/gcc/testsuite/g++.target/i386/mv28.C
+++ b/gcc/testsuite/g++.target/i386/mv28.C
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-require-ifunc "" }  */
 
 void __attribute__ ((target("avx512vl"))) foo () {} /* { dg-error "ISA '\[^\n\r\]*' is not supported in 'target' attribute, use 'arch=' syntax" } */
diff --git a/gcc/testsuite/gcc.dg/Warray-bounds-flex-arrays-1.c b/gcc/testsuite/gcc.dg/Warray-bounds-flex-arrays-1.c
index fd2aacf64520566ab786fc2f854e9c0413cb3e9d..fd9d095269c9f0fb19db10e220b0b7d6d10d49b2 100644
--- a/gcc/testsuite/gcc.dg/Warray-bounds-flex-arrays-1.c
+++ b/gcc/testsuite/gcc.dg/Warray-bounds-flex-arrays-1.c
@@ -1,5 +1,5 @@
 /* Test -fstrict-flex-arrays + -Warray-bounds + -Wstrict-flex-arrays.  */
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -Wstrict-flex-arrays -fstrict-flex-arrays=1 -Warray-bounds" } */
 
 struct trailing_array_1 {
diff --git a/gcc/testsuite/gcc.dg/pr83072-2.c b/gcc/testsuite/gcc.dg/pr83072-2.c
index f495f2582c437e411d1ecdfe002e526a6c20634e..dff6b50b717eff867a84a07af86c5fac89ca05e7 100644
--- a/gcc/testsuite/gcc.dg/pr83072-2.c
+++ b/gcc/testsuite/gcc.dg/pr83072-2.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-evrp-details" } */
 
 int f1(int a, int b, int c){
diff --git a/gcc/testsuite/gcc.dg/pr83073.c b/gcc/testsuite/gcc.dg/pr83073.c
index 228e1890086b481d9723007605d3104d9bb21fa6..0357f5e013e0a78230cf9bcfc0232d4be4a669e9 100644
--- a/gcc/testsuite/gcc.dg/pr83073.c
+++ b/gcc/testsuite/gcc.dg/pr83073.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-evrp-details -fno-tree-fre -fno-tree-ccp -fno-tree-forwprop" } */
 
 int f(int x)
diff --git a/gcc/testsuite/gcc.dg/pr96542.c b/gcc/testsuite/gcc.dg/pr96542.c
index 1080be7e753825f18501987f2ea86fb42b76bca6..1b59816d9e1bd128be8b69150c15c7b4d98803ca 100644
--- a/gcc/testsuite/gcc.dg/pr96542.c
+++ b/gcc/testsuite/gcc.dg/pr96542.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-evrp" } */
 /* { dg-require-effective-target int32 } */
 
diff --git a/gcc/testsuite/gcc.dg/pr97567-2.c b/gcc/testsuite/gcc.dg/pr97567-2.c
index c3ead54eaa8eefa409adfa35e4268267f45720ef..c920a4066fabee11642b1fcc4ec47f0199e3be43 100644
--- a/gcc/testsuite/gcc.dg/pr97567-2.c
+++ b/gcc/testsuite/gcc.dg/pr97567-2.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -fdump-tree-evrp -fdisable-tree-ethread" } */
 
 char a[2];
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-11a.c b/gcc/testsuite/gcc.target/i386/avx512fp16-11a.c
index 28492fa3f7b0f2073e300ade0712df9e38afa893..080575a90e24248198d53f7b98331dbda255333b 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16-11a.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-11a.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-13.c b/gcc/testsuite/gcc.target/i386/avx512fp16-13.c
index 1cd9a07b8350f4f284c1768b3f3c4d2b344be5ca..2416c67de53a4117baa14bbaf959da0c2c4a52ed 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16-13.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-13.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16 -mavx512vl" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-14.c b/gcc/testsuite/gcc.target/i386/avx512fp16-14.c
index 5c670aea6404209df228d61297437e71c4638f59..b680402ead9dd7af09116f27f9c7fd607d2c8aa8 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16-14.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-14.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16 -mavx512vl -mavx512bw" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-conjugation-1.c b/gcc/testsuite/gcc.target/i386/avx512fp16-conjugation-1.c
index 662b23ca43d8593666427c2c06a1f2c05a068291..1b974e77046b1983eb7070211e04d7d0c8460a34 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16-conjugation-1.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-conjugation-1.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-neg-1a.c b/gcc/testsuite/gcc.target/i386/avx512fp16-neg-1a.c
index bf7693e0b1d567dc12a5fea87f01ee250495b7a3..226073d52df47214e61f311f1c34d3143a534e58 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16-neg-1a.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-neg-1a.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16" } */
 
 /* { dg-final { scan-assembler-times "vpxord\[ \\t\]+\[^\n\r\]*%zmm0" 1 } } */
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16-set1-pch-1a.c b/gcc/testsuite/gcc.target/i386/avx512fp16-set1-pch-1a.c
index 0055193f243f5f2036b62345b690a20dd845bd45..21f5d02791c7f369d605fc41431d22f10eab4464 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16-set1-pch-1a.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16-set1-pch-1a.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16vl-conjugation-1.c b/gcc/testsuite/gcc.target/i386/avx512fp16vl-conjugation-1.c
index d8fdab7efec42e1df2e92ac86c0b2d938734f6e0..3ba664f4aecf6efc959bcc5df8eca15aa6da247f 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16vl-conjugation-1.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16vl-conjugation-1.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16 -mavx512vl -mavx512dq" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16vl-neg-1a.c b/gcc/testsuite/gcc.target/i386/avx512fp16vl-neg-1a.c
index a40a0d88dd28fdd2ec07b707808e48b2da36b0ae..01e03b0d953b8792bb165f89c5ffef00d0674968 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16vl-neg-1a.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16vl-neg-1a.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16 -mavx512vl" } */
 
 /* { dg-final { scan-assembler-times "vxorps\[ \\t\]+\[^\n\r\]*%xmm0" 1 } } */
diff --git a/gcc/testsuite/gcc.target/i386/avx512fp16vl-set1-pch-1a.c b/gcc/testsuite/gcc.target/i386/avx512fp16vl-set1-pch-1a.c
index 4c5624f99359112d99168b2269ffcceef14b676b..23d4ffb43f5d9679826ede96bef417fe25b7031e 100644
--- a/gcc/testsuite/gcc.target/i386/avx512fp16vl-set1-pch-1a.c
+++ b/gcc/testsuite/gcc.target/i386/avx512fp16vl-set1-pch-1a.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16 -mavx512vl" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/avx512vlfp16-11a.c b/gcc/testsuite/gcc.target/i386/avx512vlfp16-11a.c
index a8c6296f5041f64a234df65c96f7ec9852322d44..5ffa3cb152b160ad1e1270312bd0ac6449e2d2c6 100644
--- a/gcc/testsuite/gcc.target/i386/avx512vlfp16-11a.c
+++ b/gcc/testsuite/gcc.target/i386/avx512vlfp16-11a.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O2 -mavx512fp16 -mavx512vl" } */
 
 #include <immintrin.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr69225-1.c b/gcc/testsuite/gcc.target/i386/pr69225-1.c
index cc5b782326ca69928bf3897832cfeef3d95f0e0e..81aa79585a436138c219f2e9954296c2dcb6e446 100644
--- a/gcc/testsuite/gcc.target/i386/pr69225-1.c
+++ b/gcc/testsuite/gcc.target/i386/pr69225-1.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-msse2 -mfpmath=sse" } */
 
 #include <float.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr69225-2.c b/gcc/testsuite/gcc.target/i386/pr69225-2.c
index cd0a6260cf606b9f2df48c3cb9d245dc91a4f0e8..ccdfe3d414e50b4dcba6defd6136617cc0573b08 100644
--- a/gcc/testsuite/gcc.target/i386/pr69225-2.c
+++ b/gcc/testsuite/gcc.target/i386/pr69225-2.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-mno-sse -mno-80387" } */
 
 #include <float.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr69225-3.c b/gcc/testsuite/gcc.target/i386/pr69225-3.c
index 1440b7463d9df0c7ede9c3af105bfecead353248..c6ce95f98dbb38a39bd2d7706eca964d5fca8a98 100644
--- a/gcc/testsuite/gcc.target/i386/pr69225-3.c
+++ b/gcc/testsuite/gcc.target/i386/pr69225-3.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-m80387 -mfpmath=387" } */
 
 #include <float.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr69225-4.c b/gcc/testsuite/gcc.target/i386/pr69225-4.c
index b032a5f2bdfab4440247f5822cd1ceb99051a921..240eecd726dbcce6d8dcdbf3e38d115be9eacf1c 100644
--- a/gcc/testsuite/gcc.target/i386/pr69225-4.c
+++ b/gcc/testsuite/gcc.target/i386/pr69225-4.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-msse2 -mfancy-math-387 -mfpmath=sse" } */
 
 #include <float.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr69225-5.c b/gcc/testsuite/gcc.target/i386/pr69225-5.c
index 4162f7790f120e8a0465bd60dfb6100755acf7ee..0f176f1837af8f8f8298eb98313c1e93428172ff 100644
--- a/gcc/testsuite/gcc.target/i386/pr69225-5.c
+++ b/gcc/testsuite/gcc.target/i386/pr69225-5.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-msse2 -m80387 -mfpmath=sse,387" } */
 
 #include <float.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr69225-6.c b/gcc/testsuite/gcc.target/i386/pr69225-6.c
index cd5f41946d6a3c99fbfb5ae04af5762914134f23..dcb1af997baf29270ed8c437001c3dd6b0110d9f 100644
--- a/gcc/testsuite/gcc.target/i386/pr69225-6.c
+++ b/gcc/testsuite/gcc.target/i386/pr69225-6.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-mno-80387" } */
 
 #include <float.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr69225-7.c b/gcc/testsuite/gcc.target/i386/pr69225-7.c
index 2ca5692b23fe356e78e0b43ef81965b984d503f7..fa4324532ce87f9eea422e963ac9e3cb662e392b 100644
--- a/gcc/testsuite/gcc.target/i386/pr69225-7.c
+++ b/gcc/testsuite/gcc.target/i386/pr69225-7.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-msse -mno-sse2 -m80387 -mfpmath=sse" } */
 
 #include <float.h>
diff --git a/gcc/testsuite/gcc.target/i386/pr96562-1.c b/gcc/testsuite/gcc.target/i386/pr96562-1.c
index 6ebeeb1fb1728ba39383125462d26c06880bcd23..7d86b71a6e8cee4d00f755e9918790b665bc88a8 100644
--- a/gcc/testsuite/gcc.target/i386/pr96562-1.c
+++ b/gcc/testsuite/gcc.target/i386/pr96562-1.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-msse4.1 -O2" } */
 /* { dg-final { scan-assembler-not "pinsr" } } */
 
diff --git a/gcc/testsuite/gcc.target/riscv/rv32e_stack.c b/gcc/testsuite/gcc.target/riscv/rv32e_stack.c
index cec90ede4b52fca7c240197abf01e945c3a98180..04aa230c52a09fe855c84e5cf7dd824c6b9e06d2 100644
--- a/gcc/testsuite/gcc.target/riscv/rv32e_stack.c
+++ b/gcc/testsuite/gcc.target/riscv/rv32e_stack.c
@@ -1,4 +1,4 @@
-/* { dg-do compile} */
+/* { dg-do compile } */
 /* { dg-options "-O0 -march=rv32e -mabi=ilp32e -fomit-frame-pointer" } */
 
 int getInt();
diff --git a/gcc/testsuite/gfortran.dg/c-interop/removed-restrictions-3.f90 b/gcc/testsuite/gfortran.dg/c-interop/removed-restrictions-3.f90
index b429e8052c9fdd43d6235ee685de7067d7665607..a89c1373d1fce90049077123819cc9d6189eb0d4 100644
--- a/gcc/testsuite/gfortran.dg/c-interop/removed-restrictions-3.f90
+++ b/gcc/testsuite/gfortran.dg/c-interop/removed-restrictions-3.f90
@@ -1,4 +1,4 @@
-! { dg-do compile}
+! { dg-do compile }
 !
 ! TS 29113
 ! 8.1 Removed restrictions on ISO_C_BINDING module procedures
diff --git a/gcc/testsuite/gnat.dg/renaming1.adb b/gcc/testsuite/gnat.dg/renaming1.adb
index c85e50abd40cbb82232cf234f2b4e34348f0cb16..fd1a801b41b8274b59ef7f0916e7cc7fde317670 100644
--- a/gcc/testsuite/gnat.dg/renaming1.adb
+++ b/gcc/testsuite/gnat.dg/renaming1.adb
@@ -1,4 +1,4 @@
--- { dg-do compile}
+-- { dg-do compile }
 -- { dg-options "-gnatwa" }
 
 with Ada.Text_IO;