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remove a redundant test, filecheckize another.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93774 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-01-18 21:55:43 +00:00
parent 1ad0e8b576
commit 569a7b9237
2 changed files with 26 additions and 43 deletions
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39
test/Transforms/InstCombine/apint-elim-logicalops.ll
View File

@ -1,39 +0,0 @@
; Test that elimination of logical operators works with
; arbitrary precision integers.
; RUN: opt < %s -instcombine -S | \
; RUN: not grep {(and\|xor\|add\|shl\|shr)}
; END.
define i33 @test1(i33 %x) {
%tmp.1 = and i33 %x, 65535 ; <i33> [#uses=1]
%tmp.2 = xor i33 %tmp.1, -32768 ; <i33> [#uses=1]
%tmp.3 = add i33 %tmp.2, 32768 ; <i33> [#uses=1]
ret i33 %tmp.3
}
define i33 @test2(i33 %x) {
%tmp.1 = and i33 %x, 65535 ; <i33> [#uses=1]
%tmp.2 = xor i33 %tmp.1, 32768 ; <i33> [#uses=1]
%tmp.3 = add i33 %tmp.2, -32768 ; <i33> [#uses=1]
ret i33 %tmp.3
}
define i33 @test3(i16 %P) {
%tmp.1 = zext i16 %P to i33 ; <i33> [#uses=1]
%tmp.4 = xor i33 %tmp.1, 32768 ; <i33> [#uses=1]
%tmp.5 = add i33 %tmp.4, -32768 ; <i33> [#uses=1]
ret i33 %tmp.5
}
define i33 @test5(i33 %x) {
%tmp.1 = and i33 %x, 254
%tmp.2 = xor i33 %tmp.1, 128
%tmp.3 = add i33 %tmp.2, -128
ret i33 %tmp.3
}
define i33 @test6(i33 %x) {
%tmp.2 = shl i33 %x, 16 ; <i33> [#uses=1]
%tmp.4 = lshr i33 %tmp.2, 16 ; <i33> [#uses=1]
ret i33 %tmp.4
}

30
test/Transforms/InstCombine/signext.ll
View File

@ -1,12 +1,16 @@
; RUN: opt < %s -instcombine -S | \
; RUN: not grep {(and\|xor\|add\|shl\|shr)}
; END.
; RUN: opt < %s -instcombine -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128:n8:16:32:64"
define i32 @test1(i32 %x) {
%tmp.1 = and i32 %x, 65535 ; <i32> [#uses=1]
%tmp.2 = xor i32 %tmp.1, -32768 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, 32768 ; <i32> [#uses=1]
ret i32 %tmp.3
; CHECK: @test1
; CHECK: %sext = trunc i32 %x to i16
; CHECK: %tmp.3 = sext i16 %sext to i32
; CHECK: ret i32 %tmp.3
}
define i32 @test2(i32 %x) {
@ -14,6 +18,10 @@ define i32 @test2(i32 %x) {
%tmp.2 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, -32768 ; <i32> [#uses=1]
ret i32 %tmp.3
; CHECK: @test2
; CHECK: %sext = trunc i32 %x to i16
; CHECK: %tmp.3 = sext i16 %sext to i32
; CHECK: ret i32 %tmp.3
}
define i32 @test3(i16 %P) {
@ -21,6 +29,9 @@ define i32 @test3(i16 %P) {
%tmp.4 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.5 = add i32 %tmp.4, -32768 ; <i32> [#uses=1]
ret i32 %tmp.5
; CHECK: @test3
; CHECK: %tmp.5 = sext i16 %P to i32
; CHECK: ret i32 %tmp.5
}
define i32 @test4(i16 %P) {
@ -28,18 +39,29 @@ define i32 @test4(i16 %P) {
%tmp.4 = xor i32 %tmp.1, 32768 ; <i32> [#uses=1]
%tmp.5 = add i32 %tmp.4, -32768 ; <i32> [#uses=1]
ret i32 %tmp.5
; CHECK: @test4
; CHECK: %tmp.5 = sext i16 %P to i32
; CHECK: ret i32 %tmp.5
}
define i32 @test5(i32 %x) {
%tmp.1 = and i32 %x, 254 ; <i32> [#uses=1]
%tmp.1 = and i32 %x, 255 ; <i32> [#uses=1]
%tmp.2 = xor i32 %tmp.1, 128 ; <i32> [#uses=1]
%tmp.3 = add i32 %tmp.2, -128 ; <i32> [#uses=1]
ret i32 %tmp.3
; CHECK: @test5
; CHECK: %sext = trunc i32 %x to i8
; CHECK: %tmp.3 = sext i8 %sext to i32
; CHECK: ret i32 %tmp.3
}
define i32 @test6(i32 %x) {
%tmp.2 = shl i32 %x, 16 ; <i32> [#uses=1]
%tmp.4 = ashr i32 %tmp.2, 16 ; <i32> [#uses=1]
ret i32 %tmp.4
; CHECK: @test6
; CHECK: %tmp.2 = shl i32 %x, 16
; CHECK: %tmp.4 = ashr i32 %tmp.2, 16
; CHECK: ret i32 %tmp.4
}