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|
; RUN: llc -x86-condbr-folding=true -mtriple=x86_64-linux-gnu -mcpu=sandybridge %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=MERGE
; RUN: llc -x86-condbr-folding=true -mtriple=x86_64-linux-gnu -mcpu=ivybridge %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=MERGE
; RUN: llc -x86-condbr-folding=true -mtriple=x86_64-linux-gnu -mcpu=haswell %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=MERGE
; RUN: llc -x86-condbr-folding=true -mtriple=x86_64-linux-gnu -mcpu=broadwell %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=MERGE
; RUN: llc -x86-condbr-folding=true -mtriple=x86_64-linux-gnu -mcpu=skylake %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=MERGE
; RUN: llc -x86-condbr-folding=true -mtriple=x86_64-linux-gnu -mcpu=skx %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=MERGE
; RUN: llc -x86-condbr-folding=true -mtriple=x86_64-linux-gnu %s -o - -verify-machineinstrs | FileCheck %s --check-prefix=NOTMERGE
@v1 = common dso_local local_unnamed_addr global i32 0, align 4
@v2 = common dso_local local_unnamed_addr global i32 0, align 4
@v3 = common dso_local local_unnamed_addr global i32 0, align 4
@v4 = common dso_local local_unnamed_addr global i32 0, align 4
@v5 = common dso_local local_unnamed_addr global i32 0, align 4
@v6 = common dso_local local_unnamed_addr global i32 0, align 4
@v7 = common dso_local local_unnamed_addr global i32 0, align 4
@v8 = common dso_local local_unnamed_addr global i32 0, align 4
@v9 = common dso_local local_unnamed_addr global i32 0, align 4
@v10 = common dso_local local_unnamed_addr global i32 0, align 4
@v11 = common dso_local local_unnamed_addr global i32 0, align 4
@v12 = common dso_local local_unnamed_addr global i32 0, align 4
@v13 = common dso_local local_unnamed_addr global i32 0, align 4
@v14 = common dso_local local_unnamed_addr global i32 0, align 4
@v15 = common dso_local local_unnamed_addr global i32 0, align 4
define dso_local i32 @fourcases(i32 %n) {
entry:
switch i32 %n, label %return [
i32 111, label %sw.bb
i32 222, label %sw.bb1
i32 3665, label %sw.bb2
i32 4444, label %sw.bb4
]
sw.bb:
%0 = load i32, i32* @v1, align 4
br label %return
sw.bb1:
%1 = load i32, i32* @v2, align 4
%add = add nsw i32 %1, 12
br label %return
sw.bb2:
%2 = load i32, i32* @v3, align 4
%add3 = add nsw i32 %2, 13
br label %return
sw.bb4:
%3 = load i32, i32* @v1, align 4
%4 = load i32, i32* @v2, align 4
%add5 = add nsw i32 %4, %3
br label %return
return:
%retval.0 = phi i32 [ %add5, %sw.bb4 ], [ %add3, %sw.bb2 ], [ %add, %sw.bb1 ], [ %0, %sw.bb ], [ 0, %entry ]
ret i32 %retval.0
}
; MERGE-LABEL: fourcases
; MERGE: cmpl $3665
; MERGE-NEXT: jg
; MERGE-NEXT: jge
; NOTMERGE: cmpl $3664
; NOTMERGE-NEXT: jg
define dso_local i32 @fifteencases(i32) {
switch i32 %0, label %32 [
i32 -111, label %2
i32 -13, label %4
i32 25, label %6
i32 37, label %8
i32 89, label %10
i32 111, label %12
i32 213, label %14
i32 271, label %16
i32 283, label %18
i32 325, label %20
i32 327, label %22
i32 429, label %24
i32 500, label %26
i32 603, label %28
i32 605, label %30
]
; <label>:2
%3 = load i32, i32* @v1, align 4
br label %32
; <label>:4
%5 = load i32, i32* @v2, align 4
br label %32
; <label>:6
%7 = load i32, i32* @v3, align 4
br label %32
; <label>:8
%9 = load i32, i32* @v4, align 4
br label %32
; <label>:10
%11 = load i32, i32* @v5, align 4
br label %32
; <label>:12
%13 = load i32, i32* @v6, align 4
br label %32
; <label>:14
%15 = load i32, i32* @v7, align 4
br label %32
; <label>:16
%17 = load i32, i32* @v8, align 4
br label %32
; <label>:18
%19 = load i32, i32* @v9, align 4
br label %32
; <label>:20
%21 = load i32, i32* @v10, align 4
br label %32
; <label>:22
%23 = load i32, i32* @v11, align 4
br label %32
; <label>:24
%25 = load i32, i32* @v12, align 4
br label %32
; <label>:26
%27 = load i32, i32* @v13, align 4
br label %32
; <label>:28:
%29 = load i32, i32* @v14, align 4
br label %32
; <label>:30:
%31 = load i32, i32* @v15, align 4
br label %32
; <label>:32:
%33 = phi i32 [ %31, %30 ], [ %29, %28 ], [ %27, %26 ], [ %25, %24 ], [ %23, %22 ], [ %21, %20 ], [ %19, %18 ], [ %17, %16 ], [ %15, %14 ], [ %13, %12 ], [ %11, %10 ], [ %9, %8 ], [ %7, %6 ], [ %5, %4 ], [ %3, %2 ], [ 0, %1 ]
ret i32 %33
}
; MERGE-LABEL: fifteencases
; MERGE: cmpl $271
; MERGE-NEXT: jg
; MERGE-NEXT: jge
; MERGE: cmpl $37
; MERGE-NEXT: jg
; MERGE-NEXT: jge
; MERGE: cmpl $429
; MERGE-NEXT: jg
; MERGE-NEXT: jge
; MERGE: cmpl $325
; MERGE-NEXT: jg
; MERGE-NEXT: jge
; MERGE: cmpl $603
; MERGE-NEXT: jg
; MERGE-NEXT: jge
; NOTMERGE-LABEL: fifteencases
; NOTMERGE: cmpl $270
; NOTMERGE-NEXT: jle
|
