[llvm] [X86][SSE] Don't emit SSE2 load instructions in SSE1-only mode (PR #134547)

[Simon Pilgrim via llvm-commits]

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@@ -251,5 +251,18 @@ define <2 x float> @PR31672() #0 {
 
 declare <2 x float> @llvm.sqrt.v2f32(<2 x float>) #1
 
+define void @movaps_test(ptr nocapture noundef writeonly %v) {
+; X86-LABEL: movaps_test:
+; X86:       # %bb.0:
+; X86-NEXT:    movl 4(%esp), %eax
+; X86-NEXT:    movaps {{\.?LCPI[0-9]+_[0-9]+}}, %xmm0
+
+; X64-LABEL: movaps_test:
+; X64:       # %bb.0:
+; X64-NEXT:    movaps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
+  store <2 x float> <float 2.560000e+02, float 5.120000e+02>, ptr %v, align 4
+  ret void
+}
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RKSimon wrote:

This would be better adding to a new file - I've created #134607 to track this, so pr134607.ll would be a good name.

Take a look at the simplified repro I created in the issue (removes manyof the unnecessary function attributes).

https://github.com/llvm/llvm-project/pull/134547