Clean up testcase

Signed-off-by: John Lu <[email protected]>

Author: LU-JOHN

llvm/test/CodeGen/X86/narrow-load-metadata.ll

@@ -1,20 +1,17 @@
-; RUN: llc < %s
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu < %s
 ;
 ; This test case is reduced from RangeConstraintManager.cpp in a ASan build.
 ; It crashes reduceLoadWidth in DAGCombiner.cpp. Preservation of range
 ; metdata must ensure that ConstantRange truncation is strictly smaller.
 
-target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-linux-gnu"
-
-define ptr @_ZN12_GLOBAL__N_121SymbolicRangeInferrer19VisitBinaryOperatorILN5clang18BinaryOperatorKindE15EEENS2_4ento8RangeSetES5_S5_NS2_8QualTypeE() {
+define i8 @_ZN12_GLOBAL__N_121SymbolicRangeInferrer19VisitBinaryOperatorILN5clang18BinaryOperatorKindE15EEENS2_4ento8RangeSetES5_S5_NS2_8QualTypeE(ptr %valptr) {
 entry:
-  %0 = load i8, ptr null, align 4, !range !0, !noundef !1
-  %retval.sroa.1.0.insert.ext.i = zext i8 %0 to i64
+  %val = load i8, ptr %valptr, align 4, !range !0, !noundef !1
+  %retval.sroa.1.0.insert.ext.i = zext i8 %val to i64
   %retval.sroa.1.0.insert.shift.i = shl i64 %retval.sroa.1.0.insert.ext.i, 32
   %coerce.val.ii = trunc i64 %retval.sroa.1.0.insert.shift.i to i40
-  store i40 %coerce.val.ii, ptr null, align 4
-  ret ptr null
+  store i40 %coerce.val.ii, ptr %valptr, align 4
+  ret i8 %val
 }
 
 !0 = !{i8 0, i8 2}