[llvm] 9d6db32 - Remove a reference to rdar://4653682 from X86/README.txt

[Jon Roelofs via llvm-commits]

Author: Jon Roelofs
Date: 2023-08-09T15:24:31-07:00
New Revision: 9d6db32640d727a1b51fd6b1f9c90ca7258cdb17

URL: https://github.com/llvm/llvm-project/commit/9d6db32640d727a1b51fd6b1f9c90ca7258cdb17
DIFF: https://github.com/llvm/llvm-project/commit/9d6db32640d727a1b51fd6b1f9c90ca7258cdb17.diff

LOG: Remove a reference to rdar://4653682 from X86/README.txt

The radar in question has long since been closed, and the issue the README
documented appears to have been fixed (at least as of clang 16, if not
earlier):

https://clang.godbolt.org/z/7KT5nnoTo

Added: 
    

Modified: 
    llvm/lib/Target/X86/README.txt

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/README.txt b/llvm/lib/Target/X86/README.txt
index c06a7b1ade6d6c..717124b06a828b 100644
--- a/llvm/lib/Target/X86/README.txt
+++ b/llvm/lib/Target/X86/README.txt
@@ -1006,52 +1006,6 @@ couple more movls by putting 4(%esp) into %eax instead of %ecx.
 
 //===---------------------------------------------------------------------===//
 
-See rdar://4653682.
-
-From flops:
-
-LBB1_15:        # bb310
-        cvtss2sd        LCPI1_0, %xmm1
-        addsd   %xmm1, %xmm0
-        movsd   176(%esp), %xmm2
-        mulsd   %xmm0, %xmm2
-        movapd  %xmm2, %xmm3
-        mulsd   %xmm3, %xmm3
-        movapd  %xmm3, %xmm4
-        mulsd   LCPI1_23, %xmm4
-        addsd   LCPI1_24, %xmm4
-        mulsd   %xmm3, %xmm4
-        addsd   LCPI1_25, %xmm4
-        mulsd   %xmm3, %xmm4
-        addsd   LCPI1_26, %xmm4
-        mulsd   %xmm3, %xmm4
-        addsd   LCPI1_27, %xmm4
-        mulsd   %xmm3, %xmm4
-        addsd   LCPI1_28, %xmm4
-        mulsd   %xmm3, %xmm4
-        addsd   %xmm1, %xmm4
-        mulsd   %xmm2, %xmm4
-        movsd   152(%esp), %xmm1
-        addsd   %xmm4, %xmm1
-        movsd   %xmm1, 152(%esp)
-        incl    %eax
-        cmpl    %eax, %esi
-        jge     LBB1_15 # bb310
-LBB1_16:        # bb358.loopexit
-        movsd   152(%esp), %xmm0
-        addsd   %xmm0, %xmm0
-        addsd   LCPI1_22, %xmm0
-        movsd   %xmm0, 152(%esp)
-
-Rather than spilling the result of the last addsd in the loop, we should have
-insert a copy to split the interval (one for the duration of the loop, one
-extending to the fall through). The register pressure in the loop isn't high
-enough to warrant the spill.
-
-Also check why xmm7 is not used at all in the function.
-
-//===---------------------------------------------------------------------===//
-
 Take the following:
 
 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-S128"