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| author | Chris Lattner <sabre@nondot.org> | 2009-10-23 06:57:37 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-10-23 06:57:37 +0000 |
| commit | 17f0cd3cc1432231f2bc5601e7e463986a59d817 (patch) | |
| tree | 3281e0056f828380884e59e2dfdb0a7c1dbf9fec /test/Transforms/ConstProp | |
| parent | 739208a790398cf1f9da05149c768371e48781e8 (diff) | |
| download | llvm-17f0cd3cc1432231f2bc5601e7e463986a59d817.tar.gz llvm-17f0cd3cc1432231f2bc5601e7e463986a59d817.tar.bz2 llvm-17f0cd3cc1432231f2bc5601e7e463986a59d817.tar.xz | |
teach libanalysis to simplify vector loads with bitcast sources. This
implements something out of Target/README.txt producing:
_foo: ## @foo
movl 4(%esp), %eax
movapd LCPI1_0, %xmm0
movapd %xmm0, (%eax)
ret $4
instead of:
_foo: ## @foo
movl 4(%esp), %eax
movapd _b, %xmm0
mulpd LCPI1_0, %xmm0
addpd _a, %xmm0
movapd %xmm0, (%eax)
ret $4
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84942 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/ConstProp')
| -rw-r--r-- | test/Transforms/ConstProp/loads.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/Transforms/ConstProp/loads.ll b/test/Transforms/ConstProp/loads.ll index 3096ed347c..f3e7f6a4b7 100644 --- a/test/Transforms/ConstProp/loads.ll +++ b/test/Transforms/ConstProp/loads.ll @@ -77,3 +77,13 @@ define i128 @test9() { ; @test9 ; CHECK: ret i128 112312312 } + +; vector load. +define <2 x i64> @test10() { + %r = load <2 x i64>* bitcast({i64, i64}* @test3 to <2 x i64>*) + ret <2 x i64> %r + +; @test10 +; CHECK: ret <2 x i64> <i64 112312312, i64 0> +} + |