81 lines
2.5 KiB
LLVM
81 lines
2.5 KiB
LLVM
; RUN: llc < %s -verify-machineinstrs -frame-pointer=all -disable-machine-dce -verify-coalescing
|
|
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-macosx10.7.0"
|
|
|
|
; This test case has a sub-register join followed by a remat:
|
|
;
|
|
; 256L %2 = COPY killed %7:sub_32bit; GR32:%2 GR64:%7
|
|
; Considering merging %2 with %7:sub_32bit
|
|
; Cross-class to GR64.
|
|
; RHS = %2 = [256d,272d:0) 0@256d
|
|
; LHS = %7 = [208d,256d:0)[304L,480L:0) 0@208d
|
|
; updated: 272L %0 = COPY killed %7:sub_32bit; GR32:%0 GR64:%7
|
|
; Joined. Result = %7 = [208d,272d:0)[304L,480L:0) 0@208d
|
|
;
|
|
; 272L %10:sub_32bit = COPY killed %7:sub_32bit, implicit-def %10; GR64:%10,%7
|
|
; Considering merging %7 with %10
|
|
; RHS = %7 = [208d,272d:0)[304L,480L:0) 0@208d
|
|
; LHS = %10 = [16d,64L:2)[64L,160L:1)[192L,240L:1)[272d,304L:3)[304L,352d:1)[352d,400d:0)[400d,400S:4) 0@352d 1@64L-phidef 2@16d-phikill 3@272d-phikill 4@400d
|
|
; Remat: %10 = MOV64r0 implicit-def %10, implicit dead %eflags, implicit-def %10; GR64:%10
|
|
; Shrink: %7 = [208d,272d:0)[304L,480L:0) 0@208d
|
|
; live-in at 240L
|
|
; live-in at 416L
|
|
; live-in at 320L
|
|
; live-in at 304L
|
|
; Shrunk: %7 = [208d,256d:0)[304L,480L:0) 0@208d
|
|
;
|
|
; The COPY at 256L is rewritten as a partial def, and that would artificially
|
|
; extend the live range of %7 to end at 256d. When the joined copy is
|
|
; removed, -verify-coalescing complains about the dangling kill.
|
|
;
|
|
; <rdar://problem/9967101>
|
|
|
|
define void @f1() nounwind uwtable ssp {
|
|
bb:
|
|
br label %bb1
|
|
|
|
bb1:
|
|
%tmp = phi i32 [ 0, %bb ], [ %tmp21, %bb20 ]
|
|
br label %bb2
|
|
|
|
bb2:
|
|
br i1 undef, label %bb5, label %bb8
|
|
|
|
bb4:
|
|
br i1 undef, label %bb2, label %bb20
|
|
|
|
bb5:
|
|
br i1 undef, label %bb4, label %bb20
|
|
|
|
bb8:
|
|
%tmp9 = phi i32 [ %tmp24, %bb23 ], [ 0, %bb2 ]
|
|
br i1 false, label %bb41, label %bb10
|
|
|
|
bb10:
|
|
%tmp11 = sub nsw i32 %tmp9, %tmp
|
|
br i1 false, label %bb2, label %bb26
|
|
|
|
bb20:
|
|
%tmp21 = phi i32 [ undef, %bb4 ], [ undef, %bb5 ], [ %tmp9, %bb27 ], [ undef, %bb32 ]
|
|
%tmp22 = phi i32 [ undef, %bb4 ], [ undef, %bb5 ], [ %tmp11, %bb27 ], [ undef, %bb32 ]
|
|
br label %bb1
|
|
|
|
bb23:
|
|
%tmp24 = add nsw i32 %tmp9, 1
|
|
br label %bb8
|
|
|
|
bb26:
|
|
br i1 undef, label %bb27, label %bb32
|
|
|
|
bb27:
|
|
%tmp28 = zext i32 %tmp11 to i64
|
|
%tmp30 = icmp eq i64 undef, %tmp28
|
|
br i1 %tmp30, label %bb20, label %bb27
|
|
|
|
bb32:
|
|
br i1 undef, label %bb20, label %bb23
|
|
|
|
bb41:
|
|
ret void
|
|
}
|