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filecheckize

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112235 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-08-26 22:23:39 +00:00
parent 681ccf40d7
commit 98b3d3793c
1 changed files with 19 additions and 7 deletions
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26
test/Transforms/InstCombine/trunc.ll
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@@ -1,38 +1,50 @@
; RUN: opt < %s -instcombine -S > %t ; RUN: opt < %s -instcombine -S | FileCheck %s
; RUN: not grep zext %t
; RUN: not grep sext %t
; Instcombine should be able to eliminate all of these ext casts. ; Instcombine should be able to eliminate all of these ext casts.
declare void @use(i32) declare void @use(i32)
define i64 @foo(i64 %a) { define i64 @test1(i64 %a) {
%b = trunc i64 %a to i32 %b = trunc i64 %a to i32
%c = and i32 %b, 15 %c = and i32 %b, 15
%d = zext i32 %c to i64 %d = zext i32 %c to i64
call void @use(i32 %b) call void @use(i32 %b)
ret i64 %d ret i64 %d
; CHECK: @test1
; CHECK: %d = and i64 %a, 15
; CHECK: ret i64 %d
} }
define i64 @bar(i64 %a) { define i64 @test2(i64 %a) {
%b = trunc i64 %a to i32 %b = trunc i64 %a to i32
%c = shl i32 %b, 4 %c = shl i32 %b, 4
%q = ashr i32 %c, 4 %q = ashr i32 %c, 4
%d = sext i32 %q to i64 %d = sext i32 %q to i64
call void @use(i32 %b) call void @use(i32 %b)
ret i64 %d ret i64 %d
; CHECK: @test2
; CHECK: shl i64 %a, 36
; CHECK: %d = ashr i64 {{.*}}, 36
; CHECK: ret i64 %d
} }
define i64 @goo(i64 %a) { define i64 @test3(i64 %a) {
%b = trunc i64 %a to i32 %b = trunc i64 %a to i32
%c = and i32 %b, 8 %c = and i32 %b, 8
%d = zext i32 %c to i64 %d = zext i32 %c to i64
call void @use(i32 %b) call void @use(i32 %b)
ret i64 %d ret i64 %d
; CHECK: @test3
; CHECK: %d = and i64 %a, 8
; CHECK: ret i64 %d
} }
define i64 @hoo(i64 %a) { define i64 @test4(i64 %a) {
%b = trunc i64 %a to i32 %b = trunc i64 %a to i32
%c = and i32 %b, 8 %c = and i32 %b, 8
%x = xor i32 %c, 8 %x = xor i32 %c, 8
%d = zext i32 %x to i64 %d = zext i32 %x to i64
call void @use(i32 %b) call void @use(i32 %b)
ret i64 %d ret i64 %d
; CHECK: @test4
; CHECK: = and i64 %a, 8
; CHECK: %d = xor i64 {{.*}}, 8
; CHECK: ret i64 %d
} }