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