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X86: Add a note.
author
Benjamin Kramer
<benny.kra@googlemail.com>
Sun, 17 Feb 2013 23:34:14 +0000
(23:34 +0000)
committer
Benjamin Kramer
<benny.kra@googlemail.com>
Sun, 17 Feb 2013 23:34:14 +0000
(23:34 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175408
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Target/X86/README-SSE.txt
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diff --git
a/lib/Target/X86/README-SSE.txt
b/lib/Target/X86/README-SSE.txt
index 40110353fc6237ade72586ab2f1e3e2ed8f507c7..496b704ee85fb16878eb8585a77121b78497a674 100644
(file)
--- a/
lib/Target/X86/README-SSE.txt
+++ b/
lib/Target/X86/README-SSE.txt
@@
-953,3
+953,12
@@
similarly, v[0]-v[1] should match to hsubpd, and {v[0]-v[1], w[0]-w[1]} should
turn into hsubpd also.
//===---------------------------------------------------------------------===//
+
+define <2 x i32> @foo(<2 x double> %in) {
+ %x = fptosi <2 x double> %in to <2 x i32>
+ ret <2 x i32> %x
+}
+
+Should compile into cvttpd2dq instead of being scalarized into 2 cvttsd2si.
+
+//===---------------------------------------------------------------------===//