llvm-svn: 34938

that the instruction opcode is added to the InstructionVal value and the
consequences of that.

llvm-svn: 34937

last user when one of the managed pass uses info provided by parent pass
manager.

This was exposed by LPPassManager work.

llvm-svn: 34936

llvm-svn: 34935

llvm-svn: 34933

llvm-svn: 34932

Fix SingleSource/Regression/C/ConstructorDestructorAttributes test on arm-linux-gnueabi.

llvm-svn: 34931

llvm-svn: 34930

llvm-svn: 34929

llvm-svn: 34928

llvm-svn: 34927

llvm-svn: 34926

llvm-svn: 34925

scalarrepl things down to elements, but mem2reg can't promote elements that
are memset/memcpy'd.  Until then, the code is disabled "0 &&".

llvm-svn: 34924

llvm-svn: 34923

llvm-svn: 34922

llvm-svn: 34921

llvm-svn: 34920

define i64 @test(i64 %A, i32 %B) {
        %tmp12 = zext i32 %B to i64             ; <i64> [#uses=1]
        %tmp3 = shl i64 %tmp12, 32              ; <i64> [#uses=1]
        %tmp5 = add i64 %tmp3, %A               ; <i64> [#uses=1]
        %tmp6 = and i64 %tmp5, 123              ; <i64> [#uses=1]
        ret i64 %tmp6
}

into:

define i64 @test(i64 %A, i32 %B) {
        %tmp6 = and i64 %A, 123         ; <i64> [#uses=1]
        ret i64 %tmp6
}

This implements Transforms/InstCombine/add2.ll:test1

llvm-svn: 34919

llvm-svn: 34918

llvm-svn: 34917

llvm-svn: 34916

llvm-svn: 34915

llvm-svn: 34914

llvm-svn: 34913

llvm-svn: 34912

long long test(long long A, unsigned B) {
  return (A + ((long long)B << 32));
}

llvm-svn: 34911

llvm-svn: 34910

addc, turn it into add.

This allows us to compile:

long long test(long long A, unsigned B) {
  return (A + ((long long)B << 32)) & 123;
}

into:

_test:
        movl $123, %eax
        andl 4(%esp), %eax
        xorl %edx, %edx
        ret

instead of:
_test:
        xorl %edx, %edx
        movl %edx, %eax
        addl 4(%esp), %eax   ;; add of zero
        andl $123, %eax
        ret

llvm-svn: 34909

llvm-svn: 34908

llvm-svn: 34906

llvm-svn: 34905

llvm-svn: 34904

llvm-svn: 34903

llvm-svn: 34902

up simplifycfg by 20%

llvm-svn: 34901

llvm-svn: 34900

llvm-svn: 34899

would scan the entire loop body, then scan all users of instructions in the
loop, looking for users outside the loop.  Now, since we know that the
loop is in LCSSA form, we know that any users outside the loop will be LCSSA
phi nodes.  Just scan them.

This speeds up indvars significantly.

llvm-svn: 34898

llvm-svn: 34897