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Properly emit range comparisons for switch cases, where neighbour cases

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go to the same destination. Now we're producing really good code for
switch-lower-feature.ll testcase


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35672 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2007-04-04 21:14:49 +00:00
parent bbf6f5751d
commit 5502bf67cd
5 changed files with 240 additions and 79 deletions
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47
test/CodeGen/Generic/switch-lower-feature-2.ll Normal file
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@@ -0,0 +1,47 @@
; RUN: llvm-as < %s | llc -march=x86 -o - | grep jb | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep \$6 | wc -l | grep 2 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep 1024 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep 1023 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep 119 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep JTI | wc -l | grep 2 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep jg | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep ja | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep js | wc -l | grep 1
define i32 @main(i32 %tmp158) {
entry:
switch i32 %tmp158, label %bb336 [
i32 -2147483648, label %bb338
i32 -2147483647, label %bb338
i32 -2147483646, label %bb338
i32 120, label %bb338
i32 121, label %bb339
i32 122, label %bb340
i32 123, label %bb341
i32 124, label %bb342
i32 125, label %bb343
i32 126, label %bb336
i32 1024, label %bb338
i32 0, label %bb338
i32 1, label %bb338
i32 2, label %bb338
i32 3, label %bb338
i32 4, label %bb338
i32 5, label %bb338
]
bb336:
ret i32 10
bb338:
ret i32 11
bb339:
ret i32 12
bb340:
ret i32 13
bb341:
ret i32 14
bb342:
ret i32 15
bb343:
ret i32 18
}

8
test/CodeGen/Generic/switch-lower-feature.ll
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@@ -1,10 +1,10 @@
; RUN: llvm-as < %s | llc -march=x86 -o - | grep \$5 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep \$7 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep \$6 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep 1024 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep 1023 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep 1024 | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep jg | wc -l | grep 2 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep ja | wc -l | grep 2 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep jg | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep jb | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep jae | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=x86 -o - | grep je | wc -l | grep 1
define i32 @main(i32 %tmp158) {