From 3e1d5e5ea33edb504a8074e15e1122f1e1980476 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Wed, 1 Feb 2006 01:44:25 +0000 Subject: [PATCH] Another regression from the pattern isel git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25867 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/README.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index 9e75f8ecc0e..90ed0a348d1 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. +