[llvm] [ShrinkWrap][NFC] Test with load from constant pool preventing shrink (PR #162476)

[Quentin Colombet via llvm-commits]

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@@ -0,0 +1,71 @@
+--- |
+ ; RUN: llc -x=mir -simplify-mir -run-pass=shrink-wrap -o - %s | FileCheck %s
+ ; CHECK-NOT: savePoint
+ ; CHECK-NOT: restorePoint
+
+  declare double @foo()
+
+  define double @shrink_wrap_load_from_const_pool(double %q) {
+  entry:
+    %0 = fcmp oeq double %q, 3.125500e+02
+    br i1 %0, label %common.ret, label %if.else
+
+  common.ret:                                       ; preds = %if.else, %entry, %exit1
+    %common.ret.op = phi double [ %3, %exit1 ], [ 0.000000e+00, %entry ], [ 0.000000e+00, %if.else ]
+    ret double %common.ret.op
+
+  if.else:                                          ; preds = %entry
+    %1 = call double @foo()
+    %2 = fcmp oeq double %1, 0.000000e+00
+    br i1 %2, label %exit1, label %common.ret
+
+  exit1:                                            ; preds = %if.else
+    %3 = call double @foo()
+    br label %common.ret
+  }
+...
+---
+name:            shrink_wrap_load_from_const_pool
+tracksRegLiveness: true
+constants:
+  - id:              0
+    value:           'double 3.125500e+02'
+    alignment:       8
+body:             |
+  bb.0.entry:
----------------
qcolombet wrote:

Get rid of the `.llvmir_names` in the basic block names so that you don't need the LLVM IR section.

https://github.com/llvm/llvm-project/pull/162476