[llvm] Update the base and index value for masked gather (PR #130920)

[Simon Pilgrim via llvm-commits]

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@@ -0,0 +1,37 @@
+; RUN: llc  -mtriple=x86_64-unknown-unknown -mattr=+avx512f,+avx512bw,+avx512vl,+avx512dq -mcpu=znver5 < %s | FileCheck %s
+; RUN: llc -update-baseIndex -mtriple=x86_64-unknown-unknown -mattr=+avx512f,+avx512bw,+avx512vl,+avx512dq -mcpu=znver5 < %s | FileCheck %s
+; RUN: llc -update-baseIndex=false -mtriple=x86_64-unknown-unknown -mattr=+avx512f,+avx512bw,+avx512vl,+avx512dq -mcpu=znver5 < %s | FileCheck %s -check-prefix=OLD
+
+%struct.pt = type { float, float, float, i32 }
+
+; CHECK-LABEL: test_gather_16f32_1:
+; CHECK:   vgatherdps
+
+; OLD-LABEL: test_gather_16f32_1:
+; OLD:  vgatherqps
+; OLD:  vgatherqps
+
+define <16 x float> @test_gather_16f32_1(ptr %x, ptr %arr, <16 x i1> %mask, <16 x float> %src0)  {
+  %wide.load = load <16 x i32>, ptr %arr, align 4
+  %4 = and <16 x i32> %wide.load, <i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911, i32 536870911>
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RKSimon wrote:

(style) avoid numbered variable names

https://github.com/llvm/llvm-project/pull/130920