[clang] [llvm] [NFC][PowerPC] Cleaning up test file and removing redundant front-end test (PR #151971)

[Tony Varghese via llvm-commits]

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@@ -7,240 +8,90 @@
 ; RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple=powerpc-ibm-aix \
 ; RUN:   < %s | FileCheck %s --check-prefix=POWERPC_32
 
-define i32 @test_Greater_than(ptr %colauths, i32 signext %ncols) {
-; This testcase is manually reduced to isolate the critical code blocks.
-; It is designed to check for vector comparison specifically for zero vectors.
-; In the vector.body section, we are expecting a comparison instruction (vcmpequh), 
-; merge instructions (vmrghh and vmrglh) which use exactly 2 vectors. 
-; The output of the merge instruction is being used by xxland and finally 
-; accumulated by vadduwm instruction.
-
+define i32 @test_Greater_than(ptr %colauths) {
+; This testcase is for the special case of zero-vector comparisions.
+; Currently the generated code does a comparision (vcmpequh) and then a negation (xxlnor).
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tonykuttai wrote:

nit: comparison

https://github.com/llvm/llvm-project/pull/151971