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author | Chris Lattner <sabre@nondot.org> | 2006-02-01 01:44:25 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2006-02-01 01:44:25 +0000 |
commit | 3e1d5e5ea33edb504a8074e15e1122f1e1980476 (patch) | |
tree | f45e91e32c9cbb5a43d8cd54691956a645e194de | |
parent | a55079a5ccdf0cdb4d482fb47a3fb21825f56713 (diff) | |
download | external_llvm-3e1d5e5ea33edb504a8074e15e1122f1e1980476.zip external_llvm-3e1d5e5ea33edb504a8074e15e1122f1e1980476.tar.gz external_llvm-3e1d5e5ea33edb504a8074e15e1122f1e1980476.tar.bz2 |
Another regression from the pattern isel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25867 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | lib/Target/X86/README.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index 9e75f8e..90ed0a3 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -288,3 +288,19 @@ _test: This is bad for register pressure, though the dag isel is producing a better schedule. :) + +//===---------------------------------------------------------------------===// + +This testcase should have no SSE instructions in it, and only one load from +a constant pool: + +double %test3(bool %B) { + %C = select bool %B, double 123.412, double 523.01123123 + ret double %C +} + +Currently, the select is being lowered, which prevents the dag combiner from +turning 'select (load CPI1), (load CPI2)' -> 'load (select CPI1, CPI2)' + +The pattern isel got this one right. + |