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Revert "Disable codegen prepare critical edge splitting. Machine instruction passes now"
This reverts revision 114633. It was breaking llvm-gcc-i386-linux-selfhost. It seems there is a downstream bug that is exposed by -cgp-critical-edge-splitting=0. When that bug is fixed, this patch can go back in. Note that the changes to tailcallfp2.ll are not reverted. They were good are required. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114859 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -31,7 +31,6 @@
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#include "llvm/Transforms/Utils/BuildLibCalls.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallSet.h"
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#include "llvm/ADT/Statistic.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/Support/CallSite.h"
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#include "llvm/Support/CommandLine.h"
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@ -43,12 +42,10 @@
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using namespace llvm;
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using namespace llvm::PatternMatch;
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STATISTIC(NumElim, "Number of blocks eliminated");
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static cl::opt<bool>
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CriticalEdgeSplit("cgp-critical-edge-splitting",
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cl::desc("Split critical edges during codegen prepare"),
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cl::init(false), cl::Hidden);
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cl::init(true), cl::Hidden);
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namespace {
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class CodeGenPrepare : public FunctionPass {
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@ -305,7 +302,6 @@ void CodeGenPrepare::EliminateMostlyEmptyBlock(BasicBlock *BB) {
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PFI->removeEdge(ProfileInfo::getEdge(BB, DestBB));
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}
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BB->eraseFromParent();
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++NumElim;
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DEBUG(dbgs() << "AFTER:\n" << *DestBB << "\n\n\n");
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}
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@ -624,12 +624,12 @@ bb23: ; preds = %bb22, %bb20, %bb9,
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bb24: ; preds = %bb23
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; LSR should use count-down iteration to avoid requiring the trip count
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; in a register.
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; in a register, and it shouldn't require any reloads here.
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; CHECK: @ %bb24
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; CHECK-NEXT: @ in Loop: Header=BB1_1 Depth=1
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; CHECK: subs [[REGISTER:(r[0-9]+)|(lr)]], #1
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; CHECK: bne.w
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; CHECK-NEXT: sub{{.*}} [[REGISTER:(r[0-9]+)|(lr)]], #1
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; CHECK-NEXT: bne.w
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%92 = icmp eq i32 %tmp81, %indvar78 ; <i1> [#uses=1]
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%indvar.next79 = add i32 %indvar78, 1 ; <i32> [#uses=1]
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@ -10,7 +10,7 @@
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define void @_Z19getClosestDiagonal3ii(%0* noalias sret, i32, i32) nounwind {
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; CHECK: blx ___muldf3
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; CHECK: blx ___muldf3
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; CHECK: beq LBB0_7
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; CHECK: beq LBB0_8
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; CHECK: blx ___muldf3
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; <label>:3
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switch i32 %1, label %4 [
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@ -1,4 +1,4 @@
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; RUN: llc < %s -march=x86 -mcpu=yonah -stats |& grep {Number of block tails merged} | grep 16
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; RUN: llc < %s -march=x86 -mcpu=yonah -stats |& grep {Number of block tails merged} | grep 9
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; PR1909
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@.str = internal constant [48 x i8] c"transformed bounds: (%.2f, %.2f), (%.2f, %.2f)\0A\00" ; <[48 x i8]*> [#uses=1]
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@ -389,7 +389,7 @@ return:
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; rdar://7657764
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; CHECK: asd:
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; CHECK: BB9_4:
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; CHECK: BB9_5:
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; CHECK-NEXT: addl (%r{{[^,]*}},%rdi,4), %e
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; CHECK-NEXT: incq %rdi
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; CHECK-NEXT: cmpq %rdi, %r{{[^,]*}}
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@ -464,7 +464,7 @@ bb5: ; preds = %bb3, %entry
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; And the one at %bb68, where we want to be sure to use superhero mode:
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; CHECK: BB10_7:
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; CHECK: BB10_9:
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; CHECK-NEXT: movaps 48(%r{{[^,]*}}), %xmm{{.*}}
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; CHECK-NEXT: mulps %xmm{{.*}}, %xmm{{.*}}
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; CHECK-NEXT: movaps 32(%r{{[^,]*}}), %xmm{{.*}}
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@ -484,6 +484,7 @@ bb5: ; preds = %bb3, %entry
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; CHECK-NEXT: addq $64, %r{{.*}}
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; CHECK-NEXT: addq $64, %r{{.*}}
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; CHECK-NEXT: addq $-16, %r{{.*}}
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; CHECK-NEXT: BB10_10:
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; CHECK-NEXT: cmpq $15, %r{{.*}}
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; CHECK-NEXT: jg
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@ -1,5 +1,5 @@
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; RUN: llc < %s -march=x86 -stats |& grep {Number of blocks eliminated} | grep 6
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; PR1296
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; RUN: llc < %s -march=x86 | grep {movl \$1} | count 1
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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"
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target triple = "i686-apple-darwin8"
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@ -1,4 +1,4 @@
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; RUN: llc < %s -march=x86 | grep mov | count 4
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; RUN: llc < %s -march=x86 | grep mov | count 5
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; PR2659
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define i32 @binomial(i32 %n, i32 %k) nounwind {
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@ -68,7 +68,7 @@ bb26.preheader: ; preds = %imix_test.exit
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bb23: ; preds = %imix_test.exit
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unreachable
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; X86-32: %bb26.preheader
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; X86-32: %bb26.preheader.bb28_crit_edge
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; X86-32: movl -16(%ebp),
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; X86-32-NEXT: .align 4
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; X86-32-NEXT: %bb28
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@ -1,4 +1,4 @@
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; RUN: llc < %s -march=x86 -mtriple=i686-apple-darwin9.4.0 | grep movl | count 4
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; RUN: llc < %s -march=x86 -mtriple=i686-apple-darwin9.4.0 | grep movl | count 5
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; RUN: llc < %s -march=x86 -mtriple=i686-apple-darwin9.4.0 | FileCheck %s
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; PR2659
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@ -14,11 +14,10 @@ forcond.preheader: ; preds = %entry
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%cmp44 = icmp eq i32 %k, 0 ; <i1> [#uses=1]
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br i1 %cmp44, label %afterfor, label %forbody
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; CHECK: %forcond.preheader
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; CHECK: %forcond.preheader.forbody_crit_edge
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; CHECK: movl $1
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; CHECK-NOT: xorl
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; CHECK-NOT: movl
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; CHECK-NEXT: je
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; CHECK-NEXT: movl
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ifthen: ; preds = %entry
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ret i32 0
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@ -153,16 +153,19 @@ bb30:
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; an unconditional jump to complete a two-way conditional branch.
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; CHECK: c_expand_expr_stmt:
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; CHECK: jmp .LBB3_11
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; CHECK-NEXT: .LBB3_9:
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; CHECK: jmp .LBB3_7
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; CHECK-NEXT: .LBB3_12:
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; CHECK-NEXT: movq 8(%rax), %rax
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; CHECK-NEXT: xorb %dl, %dl
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; CHECK-NEXT: movb 16(%rax), %al
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; CHECK-NEXT: cmpb $16, %al
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; CHECK-NEXT: je .LBB3_11
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; CHECK-NEXT: je .LBB3_6
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; CHECK-NEXT: cmpb $23, %al
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; CHECK-NEXT: jne .LBB3_14
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; CHECK-NEXT: .LBB3_11:
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; CHECK-NEXT: je .LBB3_6
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; CHECK-NEXT: jmp .LBB3_15
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; CHECK-NEXT: .LBB3_14:
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; CHECK-NEXT: cmpb $23, %bl
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; CHECK-NEXT: jne .LBB3_15
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; CHECK-NEXT: .LBB3_15:
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%0 = type { %struct.rtx_def* }
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%struct.lang_decl = type opaque
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