mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
8be96b95c4
There was an alias between 'simplifycfg' and 'simplify-cfg' in the PassRegistry. That was the original reason for this patch, which effectively removes the alias. This patch also replaces all occurrances of 'simplify-cfg' by 'simplifycfg'. Reason for choosing that form for the name is that it matches the DEBUG_TYPE for the pass, and the legacy PM name and also how it is spelled out in other passes such as 'loop-simplifycfg', and in other options such as 'simplifycfg-merge-cond-stores'. I for some reason the name should be changed to 'simplify-cfg' in the future, then I think such a renaming should be more widely done and not only impacting the PassRegistry. Reviewed By: aeubanks Differential Revision: https://reviews.llvm.org/D105627
124 lines
4.1 KiB
LLVM
124 lines
4.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -forward-switch-cond=false -S | FileCheck %s --check-prefix=NO_FWD
|
|
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -forward-switch-cond=true -S | FileCheck %s --check-prefix=FWD
|
|
|
|
; RUN: opt < %s -passes='simplifycfg<no-forward-switch-cond>' -S | FileCheck %s --check-prefix=NO_FWD
|
|
; RUN: opt < %s -passes='simplifycfg<forward-switch-cond>' -S | FileCheck %s --check-prefix=FWD
|
|
|
|
; PR10131
|
|
|
|
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-f80:32:32-n8:16:32"
|
|
target triple = "i386-pc-linux-gnu"
|
|
|
|
define i32 @t(i32 %m) nounwind readnone {
|
|
; NO_FWD-LABEL: @t(
|
|
; NO_FWD-NEXT: entry:
|
|
; NO_FWD-NEXT: switch i32 [[M:%.*]], label [[SW_BB4:%.*]] [
|
|
; NO_FWD-NEXT: i32 0, label [[RETURN:%.*]]
|
|
; NO_FWD-NEXT: i32 1, label [[SW_BB1:%.*]]
|
|
; NO_FWD-NEXT: i32 2, label [[SW_BB2:%.*]]
|
|
; NO_FWD-NEXT: i32 3, label [[SW_BB3:%.*]]
|
|
; NO_FWD-NEXT: ]
|
|
; NO_FWD: sw.bb1:
|
|
; NO_FWD-NEXT: br label [[RETURN]]
|
|
; NO_FWD: sw.bb2:
|
|
; NO_FWD-NEXT: br label [[RETURN]]
|
|
; NO_FWD: sw.bb3:
|
|
; NO_FWD-NEXT: br label [[RETURN]]
|
|
; NO_FWD: sw.bb4:
|
|
; NO_FWD-NEXT: br label [[RETURN]]
|
|
; NO_FWD: return:
|
|
; NO_FWD-NEXT: [[RETVAL_0:%.*]] = phi i32 [ 4, [[SW_BB4]] ], [ 3, [[SW_BB3]] ], [ 2, [[SW_BB2]] ], [ 1, [[SW_BB1]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; NO_FWD-NEXT: ret i32 [[RETVAL_0]]
|
|
;
|
|
; FWD-LABEL: @t(
|
|
; FWD-NEXT: entry:
|
|
; FWD-NEXT: [[SWITCH:%.*]] = icmp ult i32 [[M:%.*]], 4
|
|
; FWD-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[SWITCH]], i32 [[M]], i32 4
|
|
; FWD-NEXT: ret i32 [[SPEC_SELECT]]
|
|
;
|
|
entry:
|
|
switch i32 %m, label %sw.bb4 [
|
|
i32 0, label %sw.bb0
|
|
i32 1, label %sw.bb1
|
|
i32 2, label %sw.bb2
|
|
i32 3, label %sw.bb3
|
|
]
|
|
|
|
sw.bb0: ; preds = %entry
|
|
br label %return
|
|
|
|
sw.bb1: ; preds = %entry
|
|
br label %return
|
|
|
|
sw.bb2: ; preds = %entry
|
|
br label %return
|
|
|
|
sw.bb3: ; preds = %entry
|
|
br label %return
|
|
|
|
sw.bb4: ; preds = %entry
|
|
br label %return
|
|
|
|
return: ; preds = %entry, %sw.bb4, %sw.bb3, %sw.bb2, %sw.bb1
|
|
%retval.0 = phi i32 [ 4, %sw.bb4 ], [ 3, %sw.bb3 ], [ 2, %sw.bb2 ], [ 1, %sw.bb1 ], [ 0, %sw.bb0 ]
|
|
ret i32 %retval.0
|
|
}
|
|
|
|
; If 1 incoming phi value is a case constant of a switch, convert it to the switch condition:
|
|
; https://bugs.llvm.org/show_bug.cgi?id=34471
|
|
; This then subsequently should allow squashing of the other trivial case blocks.
|
|
|
|
define i32 @PR34471(i32 %x) {
|
|
; NO_FWD-LABEL: @PR34471(
|
|
; NO_FWD-NEXT: entry:
|
|
; NO_FWD-NEXT: switch i32 [[X:%.*]], label [[ELSE3:%.*]] [
|
|
; NO_FWD-NEXT: i32 17, label [[RETURN:%.*]]
|
|
; NO_FWD-NEXT: i32 19, label [[IF19:%.*]]
|
|
; NO_FWD-NEXT: i32 42, label [[IF42:%.*]]
|
|
; NO_FWD-NEXT: ]
|
|
; NO_FWD: if19:
|
|
; NO_FWD-NEXT: br label [[RETURN]]
|
|
; NO_FWD: if42:
|
|
; NO_FWD-NEXT: br label [[RETURN]]
|
|
; NO_FWD: else3:
|
|
; NO_FWD-NEXT: br label [[RETURN]]
|
|
; NO_FWD: return:
|
|
; NO_FWD-NEXT: [[R:%.*]] = phi i32 [ [[X]], [[IF19]] ], [ [[X]], [[IF42]] ], [ 0, [[ELSE3]] ], [ 17, [[ENTRY:%.*]] ]
|
|
; NO_FWD-NEXT: ret i32 [[R]]
|
|
;
|
|
; FWD-LABEL: @PR34471(
|
|
; FWD-NEXT: entry:
|
|
; FWD-NEXT: switch i32 [[X:%.*]], label [[ELSE3:%.*]] [
|
|
; FWD-NEXT: i32 17, label [[RETURN:%.*]]
|
|
; FWD-NEXT: i32 19, label [[RETURN]]
|
|
; FWD-NEXT: i32 42, label [[RETURN]]
|
|
; FWD-NEXT: ]
|
|
; FWD: else3:
|
|
; FWD-NEXT: br label [[RETURN]]
|
|
; FWD: return:
|
|
; FWD-NEXT: [[R:%.*]] = phi i32 [ 0, [[ELSE3]] ], [ [[X]], [[ENTRY:%.*]] ], [ [[X]], [[ENTRY]] ], [ [[X]], [[ENTRY]] ]
|
|
; FWD-NEXT: ret i32 [[R]]
|
|
;
|
|
entry:
|
|
switch i32 %x, label %else3 [
|
|
i32 17, label %return
|
|
i32 19, label %if19
|
|
i32 42, label %if42
|
|
]
|
|
|
|
if19:
|
|
br label %return
|
|
|
|
if42:
|
|
br label %return
|
|
|
|
else3:
|
|
br label %return
|
|
|
|
return:
|
|
%r = phi i32 [ %x, %if19 ], [ %x, %if42 ], [ 0, %else3 ], [ 17, %entry ]
|
|
ret i32 %r
|
|
}
|
|
|