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upgrade some tests.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47280 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-02-18 18:46:39 +00:00
parent e9fe65c973
commit 7c4e9a44a4
1 changed files with 39 additions and 35 deletions
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74
lib/Target/README.txt
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@ -397,32 +397,32 @@ followed by an uncond branch to an exit block.
; This testcase is due to tail-duplication not wanting to copy the return
; instruction into the terminating blocks because there was other code
; optimized out of the function after the taildup happened.
;RUN: llvm-upgrade < %s | llvm-as | opt -tailcallelim | llvm-dis | not grep call
; RUN: llvm-as < %s | opt -tailcallelim | llvm-dis | not grep call
int %t4(int %a) {
define i32 @t4(i32 %a) {
entry:
%tmp.1 = and int %a, 1
%tmp.2 = cast int %tmp.1 to bool
br bool %tmp.2, label %then.0, label %else.0
%tmp.1 = and i32 %a, 1 ; <i32> [#uses=1]
%tmp.2 = icmp ne i32 %tmp.1, 0 ; <i1> [#uses=1]
br i1 %tmp.2, label %then.0, label %else.0
then.0:
%tmp.5 = add int %a, -1
%tmp.3 = call int %t4( int %tmp.5 )
br label %return
then.0: ; preds = %entry
%tmp.5 = add i32 %a, -1 ; <i32> [#uses=1]
%tmp.3 = call i32 @t4( i32 %tmp.5 ) ; <i32> [#uses=1]
br label %return
else.0:
%tmp.7 = setne int %a, 0
br bool %tmp.7, label %then.1, label %return
else.0: ; preds = %entry
%tmp.7 = icmp ne i32 %a, 0 ; <i1> [#uses=1]
br i1 %tmp.7, label %then.1, label %return
then.1:
%tmp.11 = add int %a, -2
%tmp.9 = call int %t4( int %tmp.11 )
br label %return
then.1: ; preds = %else.0
%tmp.11 = add i32 %a, -2 ; <i32> [#uses=1]
%tmp.9 = call i32 @t4( i32 %tmp.11 ) ; <i32> [#uses=1]
br label %return
return:
%result.0 = phi int [ 0, %else.0 ], [ %tmp.3, %then.0 ],
return: ; preds = %then.1, %else.0, %then.0
%result.0 = phi i32 [ 0, %else.0 ], [ %tmp.3, %then.0 ],
[ %tmp.9, %then.1 ]
ret int %result.0
ret i32 %result.0
}
//===---------------------------------------------------------------------===//
@ -446,21 +446,19 @@ long long fib(const long long n) {
Argument promotion should promote arguments for recursive functions, like
this:
; RUN: llvm-upgrade < %s | llvm-as | opt -argpromotion | llvm-dis | grep x.val
; RUN: llvm-as < %s | opt -argpromotion | llvm-dis | grep x.val
implementation ; Functions:
internal int %foo(int* %x) {
define internal i32 @foo(i32* %x) {
entry:
%tmp = load int* %x
%tmp.foo = call int %foo(int *%x)
ret int %tmp.foo
%tmp = load i32* %x ; <i32> [#uses=0]
%tmp.foo = call i32 @foo( i32* %x ) ; <i32> [#uses=1]
ret i32 %tmp.foo
}
int %bar(int* %x) {
define i32 @bar(i32* %x) {
entry:
%tmp3 = call int %foo( int* %x) ; <int>[#uses=1]
ret int %tmp3
%tmp3 = call i32 @foo( i32* %x ) ; <i32> [#uses=1]
ret i32 %tmp3
}
//===---------------------------------------------------------------------===//
@ -529,16 +527,22 @@ We should turn things like "load+fabs+store" and "load+fneg+store" into the
corresponding integer operations. On a yonah, this loop:
double a[256];
for (b = 0; b < 10000000; b++)
for (i = 0; i < 256; i++)
a[i] = -a[i];
void foo() {
int i, b;
for (b = 0; b < 10000000; b++)
for (i = 0; i < 256; i++)
a[i] = -a[i];
}
is twice as slow as this loop:
long long a[256];
for (b = 0; b < 10000000; b++)
for (i = 0; i < 256; i++)
a[i] ^= (1ULL << 63);
void foo() {
int i, b;
for (b = 0; b < 10000000; b++)
for (i = 0; i < 256; i++)
a[i] ^= (1ULL << 63);
}
and I suspect other processors are similar. On X86 in particular this is a
big win because doing this with integers allows the use of read/modify/write