[test] Fix variable definition in acle_sve_ld1.sh

[thopre]

Summary

Clang test acle_sve_ld1.sh is missing the colon in one of the string
variable definition separating the variable name from the regex. This
leads the substitution block to be parsed as a numeric variable use.

[sdesmalen]

LGTM, thanks for fixing!

I'm curious, how did you find this case? :)

[thopre]

In D98852#2634189, @sdesmalen wrote:

LGTM, thanks for fixing!

I'm curious, how did you find this case? :)

The issue was caught by a patch of mine to FileCheck: https://reviews.llvm.org/D98691

clang/test/CodeGen/aarch64-sve-intrinsics/acle_sve_ld1sh.c

svint32_t test_svld1sh_gather_u32base_s32(svbool_t pg, svuint32_t bases) {
   // CHECK: %[[LOAD:.*]] = call <vscale x 4 x i16> @llvm.aarch64.sve.ld1.gather.scalar.offset.nxv4i16.nxv4i32(<vscale x 4 x i1> %[[PG]], <vscale x 4 x i32> %bases, i64 0)
   // CHECK: %[[SEXT:.*]] = sext <vscale x 4 x i16> %[[LOAD]] to <vscale x 4 x i32>
   // CHECK: ret <vscale x 4 x i32> %[[SEXT]]
   return SVE_ACLE_FUNC(svld1sh_gather, _u32base, _s32, )(pg, bases);
 }
 
 svint64_t test_svld1sh_gather_u64base_s64(svbool_t pg, svuint64_t bases) {
   // CHECK-LABEL: test_svld1sh_gather_u64base_s64
-  // CHECK: %[[PG.*]] = call <vscale x 2 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv2i1(<vscale x 16 x i1> %pg)
+  // CHECK: %[[PG:.*]] = call <vscale x 2 x i1> @llvm.aarch64.sve.convert.from.svbool.nxv2i1(<vscale x 16 x i1> %pg)
   // CHECK: %[[LOAD:.*]] = call <vscale x 2 x i16> @llvm.aarch64.sve.ld1.gather.scalar.offset.nxv2i16.nxv2i64(<vscale x 2 x i1> %[[PG]], <vscale x 2 x i64> %bases, i64 0)
   // CHECK: %[[SEXT:.*]] = sext <vscale x 2 x i16> %[[LOAD]] to <vscale x 2 x i64>
   // CHECK: ret <vscale x 2 x i64> %[[SEXT]]
   return SVE_ACLE_FUNC(svld1sh_gather, _u64base, _s64, )(pg, bases);
 }
 
 svuint32_t test_svld1sh_gather_u32base_u32(svbool_t pg, svuint32_t bases) {
   // CHECK-LABEL: test_svld1sh_gather_u32base_u32