8b43c1be23
If we're loading a vector constant that is known to be zero in the upper elements, then attempt to shrink the constant and just scalar load the lower 32/64 bits. Always chose the vzload/broadcast with the smallest constant load, and prefer vzload over broadcasts for same bitwidth to avoid domain flips (mainly a AVX1 issue). Fixes #73783
18 lines
544 B
LLVM
18 lines
544 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i386-unknown -mattr=+sse2 | FileCheck %s --check-prefix=X86
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; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+sse2 | FileCheck %s --check-prefix=X64
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define <2 x i64> @test1() nounwind {
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; X86-LABEL: test1:
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; X86: # %bb.0:
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; X86-NEXT: movss {{.*#+}} xmm0 = [1,0,0,0]
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; X86-NEXT: retl
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;
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; X64-LABEL: test1:
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; X64: # %bb.0:
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; X64-NEXT: movss {{.*#+}} xmm0 = [1,0,0,0]
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; X64-NEXT: retq
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ret <2 x i64> < i64 1, i64 0 >
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}
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