mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-24 08:29:39 +00:00
948c8a3e3d
doesn't dominate the header is needed, don't check whether the increment expression has computable loop evolution. While the operands of an addrec are required to be loop-invariant, they're not required to dominate any part of the loop. This fixes PR6914. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102389 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
2.2 KiB
LLVM
52 lines
2.2 KiB
LLVM
; RUN: llc -march=x86-64 < %s > /dev/null
|
|
|
|
; ScalarEvolution misses an opportunity to fold ((trunc x) + (trunc -x) + y),
|
|
; but LSR should tolerate this.
|
|
; rdar://7886751
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
|
|
target triple = "x86_64-apple-darwin11.0"
|
|
|
|
define fastcc void @formatValue(i64 %arg5) nounwind {
|
|
bb12: ; preds = %bb11
|
|
%t = trunc i64 %arg5 to i32 ; <i32> [#uses=1]
|
|
%t13 = sub i64 0, %arg5 ; <i64> [#uses=1]
|
|
%t14 = and i64 %t13, 4294967295 ; <i64> [#uses=1]
|
|
br label %bb15
|
|
|
|
bb15: ; preds = %bb21, %bb12
|
|
%t16 = phi i64 [ 0, %bb12 ], [ %t23, %bb15 ] ; <i64> [#uses=2]
|
|
%t17 = mul i64 %t14, %t16 ; <i64> [#uses=1]
|
|
%t18 = add i64 undef, %t17 ; <i64> [#uses=1]
|
|
%t19 = trunc i64 %t18 to i32 ; <i32> [#uses=1]
|
|
%t22 = icmp eq i32 %t19, %t ; <i1> [#uses=1]
|
|
%t23 = add i64 %t16, 1 ; <i64> [#uses=1]
|
|
br i1 %t22, label %bb24, label %bb15
|
|
|
|
bb24: ; preds = %bb21, %bb11
|
|
unreachable
|
|
}
|
|
|
|
; ScalarEvolution should be able to correctly expand the crazy addrec here.
|
|
; PR6914
|
|
|
|
define void @int323() nounwind {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %lbl_264, %for.inc, %entry
|
|
%g_263.tmp.1 = phi i8 [ undef, %entry ], [ %g_263.tmp.1, %for.cond ]
|
|
%p_95.addr.0 = phi i8 [ 0, %entry ], [ %add, %for.cond ]
|
|
%add = add i8 %p_95.addr.0, 1 ; <i8> [#uses=1]
|
|
br i1 undef, label %for.cond, label %lbl_264
|
|
|
|
lbl_264: ; preds = %if.end, %lbl_264.preheader
|
|
%g_263.tmp.0 = phi i8 [ %g_263.tmp.1, %for.cond ] ; <i8> [#uses=1]
|
|
%tmp7 = load i16* undef ; <i16> [#uses=1]
|
|
%conv8 = trunc i16 %tmp7 to i8 ; <i8> [#uses=1]
|
|
%mul.i = mul i8 %p_95.addr.0, %p_95.addr.0 ; <i8> [#uses=1]
|
|
%mul.i18 = mul i8 %mul.i, %conv8 ; <i8> [#uses=1]
|
|
%tobool12 = icmp eq i8 %mul.i18, 0 ; <i1> [#uses=1]
|
|
unreachable
|
|
}
|